Coal Tar
A by-product of the destructive distillation of coal used as a topical antieczematic. It is an antipruritic and keratoplastic agent used also in the treatment of psoriasis and other skin conditions. Occupational exposure to soots, tars, and certain mineral oils is known to be carcinogenic according to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985) (Merck Index, 11th ed).
Coal
Tars
Keratolytic Agents
Psoriasis
A common genetically determined, chronic, inflammatory skin disease characterized by rounded erythematous, dry, scaling patches. The lesions have a predilection for nails, scalp, genitalia, extensor surfaces, and the lumbosacral region. Accelerated epidermopoiesis is considered to be the fundamental pathologic feature in psoriasis.
Benzo(a)pyrene
Pneumoconiosis
A diffuse parenchymal lung disease caused by inhalation of dust and by tissue reaction to their presence. These inorganic, organic, particulate, or vaporized matters usually are inhaled by workers in their occupational environment, leading to the various forms (ASBESTOSIS; BYSSINOSIS; and others). Similar air pollution can also have deleterious effects on the general population.
Polycyclic Hydrocarbons, Aromatic
A major group of unsaturated cyclic hydrocarbons containing two or more rings. The vast number of compounds of this important group, derived chiefly from petroleum and coal tar, are rather highly reactive and chemically versatile. The name is due to the strong and not unpleasant odor characteristic of most substances of this nature. (From Hawley's Condensed Chemical Dictionary, 12th ed, p96)
Eczema
DNA Adducts
Ultraviolet Therapy
Semiconductors
Topical psoriasis therapy. (1/76)
Psoriasis is a common dermatosis, affecting from 1 to 3 percent of the population. Until recently, the mainstays of topical therapy have been corticosteroids, tars, anthralins and keratolytics. Recently, however, vitamin D analogs, a new anthralin preparation and topical retinoids have expanded physicians' therapeutic armamentarium. These new topical therapies offer increased hope and convenience to the large patient population with psoriasis. (+info)Gordonia alkanivorans sp. nov., isolated from tar-contaminated soil. (2/76)
Twelve bacterial strains isolated from tar-contaminated soil were subjected to a polyphasic taxonomic study. The strains possessed meso-diaminopimelic acid as the diagnostic diamino acid of the peptidoglycan, MK-9(H2) as the predominant menaquinone, long-chain mycolic acids of the Gordonia-type, straight-chain saturated and monounsaturated fatty acids, and considerable amounts of tuberculostearic acid. The G + C content of the DNA was 68 mol%. Chemotaxonomic and physiological properties and 16S rDNA sequence comparison results indicated that these strains represent a new species of the genus Gordonia. Because of the ability of these strains to use alkanes as a carbon source, the name Gordonia alkanivorans is proposed. The type strain of Gordonia alkanivorans sp. nov. is strain HKI 0136T (= DSM 44369T). (+info)Systematic review of comparative efficacy and tolerability of calcipotriol in treating chronic plaque psoriasis. (3/76)
OBJECTIVES: To evaluate the comparative efficacy and tolerability of topical calcipotriol in the treatment of mild to moderate chronic plaque psoriasis. DESIGN: Quantitative systematic review of randomised controlled trials. SUBJECTS: 6038 patients with plaque psoriasis reported in 37 trials. MAIN OUTCOME MEASURES: Mean difference in percentage change in scores on psoriasis area and severity index, and response rate ratios for both patients' and investigators' overall assessments of marked improvement or better. Adverse effects were estimated with the rate ratio, rate difference, and number needed to treat. RESULTS: Calcipotriol was at least as effective as potent topical corticosteroids, calcitriol, short contact dithranol, tacalcitol, coal tar, and combined coal tar 5%, allantoin 2%, and hydrocortisone 0.5%. Calcipotriol caused significantly more skin irritation than potent topical corticosteroids (number needed to treat to harm for irritation 10, 95% confidence interval 6 to 34). Calcipotriol monotherapy also caused more irritation than calcipotriol combined with a potent topical corticosteroid (6, 4 to 8). However, the number needed to treat for dithranol to produce lesional or perilesional irritation was 4 (3 to 5). On average, treating 23 patients with short contact dithranol led to one more patient dropping out of treatment owing to adverse effects than if they were treated with calcipotriol. CONCLUSIONS: Calcipotriol is an effective treatment for mild to moderate chronic plaque psoriasis, more so than calcitriol, tacalcitol, coal tar, and short contact dithranol. Only potent topical corticosteroids seem to have comparable efficacy at eight weeks. Although calcipotriol caused more skin irritation than topical corticosteroids this has to be balanced against the potential long term effects of corticosteroids. Skin irritation rarely led to withdrawal of calcipotriol treatment. Longer term comparative trials of calcipotriol versus dithranol and topical corticosteroids are needed to see whether these short term benefits are mirrored by long term outcomes such as duration of remission and improvement in quality of life. (+info)Bioavailability of the genotoxic components in coal tar contaminated soils in Fischer 344 rats. (4/76)
The effect of chemical aging on the bioavailability and subsequent genotoxicity of coal tar (CT)-contaminated soils was evaluated in a 17-day feeding study using Fischer 344 male rats. Rats consumed a control diet or diets amended with soil, 0.35% CT, or soil freshly prepared or aged for 9 months with 0.35% CT. Mild treatment-related microscopic lesions in liver tissue and elevated enzyme levels in serum were detected in all CT treatment groups. The (32)P-postlabeling assay was employed to determine DNA adduct formation in treated animals. All CT treatment groups induced DNA adducts in both the liver and lung. Adduct levels were 3-fold higher in lung DNA compared to hepatic DNA. After correcting adduct levels for total ingested polycyclic aromatic hydrocarbons (PAHs), a significant decrease (p < 0.05) in adduct levels was observed in both CT/soil treatment groups compared to CT control in liver and lung DNA. Adduct profiles of (32)P-postlabeled hepatic and lung DNA displayed several nonpolar DNA adducts that comigrated with PAH-adducted calf thymus DNA standards as determined through both thin-layer chromatography (TLC) and high-pressure liquid chromatography (HPLC). These results suggest that soil, but not aging of contaminants in soil, decreases the bioavailability of genotoxic components in CT, as evidenced by DNA adduct analysis. (+info)DNA adduct measurements, cell proliferation and tumor mutation induction in relation to tumor formation in B6C3F1 mice fed coal tar or benzo[a]pyrene. (5/76)
Coal tar is a complex mixture containing hundreds of compounds, at least 30 of which are polycyclic aromatic hydrocarbons, including the carcinogen benzo[a]pyrene (BaP). Although humans are exposed to complex mixtures on a daily basis, the synergistic or individual effects of components within a mixture on the carcinogenic process remain unclear. We have compared DNA adduct formation and cell proliferation in mice fed coal tar or BaP for 4 weeks with tumor formation in a 2 year chronic feeding study. Additionally, we have analyzed tumor DNA for mutations in the K-ras, H-ras and p53 genes. In the forestomach of mice fed either coal tar or BaP an adduct indicative of BaP was detected, with adduct levels increasing in a dose-responsive manner. K-ras mutations were detected in the forestomach tumors, with the incidence being similar in mice fed coal tar or BaP. These results suggest that the BaP within coal tar is associated with forestomach tumor induction in coal tar-fed mice. DNA adduct levels in the small intestine were not predictive of tumor incidence in this tissue; instead, the tumors appeared to result from compound-induced cell proliferation at high doses of coal tar. K-ras mutations were detected in lung tumors. Since lung tumors were not increased by BaP, coal tar components other than BaP appear to be responsible for the tumors induced in this tissue. H-ras mutations, primarily occurring at codon 61, were the most common mutation observed in liver tumors induced by coal tar. Since this mutation profile is observed in spontaneous hepatic tumors, components in the coal tar may be promoting the expansion of pre-existing lesions. (+info)Naphthalene and donor cell density influence field conjugation of naphthalene catabolism plasmids. (6/76)
We examined transfer of naphthalene-catabolic genes from donor microorganisms native to a contaminated site to site-derived, rifampin-resistant recipient bacteria unable to grow on naphthalene. Horizontal gene transfer (HGT) was demonstrated in filter matings using groundwater microorganisms as donors. Two distinct but similar plasmid types, closely related to pDTG1, were retrieved. In laboratory-incubated sediment matings, the addition of naphthalene stimulated HGT. However, recipient bacteria deployed in recoverable vessels in the field site (in situ) did not retrieve plasmids from native donors. Only when plasmid-containing donor cells and naphthalene were added to the in situ mating experiments did HGT occur. (+info)7H-benzo[c]fluorene: a major DNA adduct-forming component of coal tar. (7/76)
Coal tar is a complex mixture that exhibits high carcinogenic potency in lungs of animals when administered in the diet. Studies have noted that lung tumor induction does not correlate with the benzo[a]pyrene content of coal tar, suggesting that other hydrocarbons may be involved in the observed tumorigenicity. Our previous studies have demonstrated that a major 'unknown' chemical-DNA adduct is formed in the lung of mice exposed to coal tar. We have used an in vitro rat microsomal activation system to generate the 'unknown' adduct with neat coal tar and fractions of coal tar obtained by chemical fractionation and HPLC. Chemical-DNA adduct formation was evaluated by (32)P-postlabeling using both multi-dimensional TLC and HPLC. GC-MS analysis of the coal tar fractions obtained from HPLC, which produced the 'unknown' adduct in vitro, demonstrated that the adducting hydrocarbon had a mass of 216. A careful evaluation of candidate hydrocarbons led to the conclusion that a benzofluorene derivative may be responsible for forming the 'unknown' chemical-DNA adduct. Comparative in vitro and in vivo studies on the adducting properties of all three isomers of benzofluorene indicated that 7H-benzo[c]fluorene is responsible for producing the 'unknown' adduct observed in the lung of mice ingesting coal tar. Animal feeding studies also demonstrated that 7H-benzo[c]fluorene formed considerably more lung DNA adducts than 11H-benzo[a]fluorene and 11H-benzo[b]fluorene. These data indicate that the four-ring polycyclic aromatic hydrocarbon 7H-benzo[c]fluorene, a hydrocarbon not previously shown to form DNA adducts in lung, is in fact a potent lung DNA adductor and is a candidate PAH for causing lung tumors in animals treated with coal tar. (+info)A novel skin penetration enhancer: evaluation by membrane diffusion and confocal microscopy. (8/76)
PURPOSE: The aim of this study was to determine the in vitro transdermal efficacy of a Meyer Zall Laboratories (MZL) oil/water emulsion in two separate preparations containing the actives, coal tar and the non-steroidal anti-inflammatory drug, diclofenac sodium. METHOD: The release rate of the two active ingredients from MZL dermatological preparations, Exorex and Athru-Derm and four comparator products was determined using an enhancer cell system, whilst specific penetration characteristics of the MZL formulation were elucidated using confocal and electron microscopy. The latter properties were explored at both the organ level, using human skin, as well as at a cellular level using a melanoma cell line. RESULTS: While the in vitro release rates for all formulations was high, coal tar and diclofenac release from Exorex and Athru-Derm respectively was, at nearly all time intervals, significantly higher than from comparator products. Microscopy revealed the presence of spherical liposomal type structures in both the MZL lotion and a comparator gel. In the MZL lotion, the majority of these structures, referred to here as emzaloid particles, were in the order of magnitude of about 50 nm to 1 microm in diameter with a small minority exceeding these dimensions. After application of Athru-Derm to human skin, intact emzaloid particles of submicron dimensions were detected in the epidermis in association with the cell membranes. The affinity of the MZL lotion for cell membranes was further demonstrated with melanoma cells; in addition, the formulation was seen to penetrate even to the nucleus of viable cells. CONCLUSION: Overall the data suggest that the oil/water base in MZL formulations is a highly efficient transdermal vehicle able to transport a wide range of indication- specific actives to their site of action. (+info) Psoriasis is a chronic, non-contagious, autoimmune skin condition characterized by thick, scaly, red, and sometimes itchy patches on the skin. It occurs when the immune system mistakenly attacks healthy skin cells, leading to an overproduction of skin cells that build up and form scales.
Psoriasis can affect any part of the body, including the scalp, elbows, knees, and lower back. The symptoms of psoriasis can vary in severity, and the condition can have a significant impact on quality of life. In addition to physical discomfort, psoriasis can also cause emotional distress and stigma.
There is no cure for psoriasis, but there are several treatment options available, including topical creams and ointments, light therapy, and systemic medications such as biologic drugs. With proper treatment, many people with psoriasis are able to manage their symptoms and improve their quality of life.
Psoriasis is relatively common, affecting approximately 2-3% of the global population, with a higher prevalence in Caucasians than in other races. It can occur at any age, but typically starts in the late teenage years or early adulthood. Psoriasis is often associated with other health conditions, such as diabetes, heart disease, and depression.
Overall, psoriasis is a complex and multifactorial condition that requires a comprehensive approach to management, including both physical and emotional support. With appropriate treatment and self-care, people with psoriasis can lead full and active lives.
Pneumoconiosis is a type of interstitial lung disease caused by the inhalation of dust or other particles, which can lead to inflammation and scarring of the lungs. It is primarily associated with exposure to mineral dusts, such as those found in coal mining, but it can also be caused by other types of inhaled particles.
There are several forms of pneumoconiosis, including:
* Coal workers' pneumoconiosis (CWP): caused by inhalation of coal dust in coal miners.
* Silicosis: caused by inhalation of silica dust in workers such as quarry workers, miners, and others who work with silica-containing materials.
* Asbestosis: caused by inhalation of asbestos fibers, which can lead to inflammation and scarring of the lungs.
* Hypersensitivity pneumonitis: caused by exposure to specific organic dusts, such as those found in agricultural or woodworking settings.
The symptoms of pneumoconiosis can vary depending on the type and severity of the disease, but may include coughing, shortness of breath, fatigue, and fever. In severe cases, pneumoconiosis can lead to respiratory failure and other complications.
Diagnosis of pneumoconiosis typically involves a combination of physical examination, medical history, and diagnostic tests such as chest X-rays, CT scans, and lung function tests. Treatment for pneumoconiosis may include medications to manage symptoms, pulmonary rehabilitation, and measures to reduce exposure to the offending particles. In severe cases, lung transplantation may be necessary.
Prevention of pneumoconiosis is critical, and this involves implementing appropriate safety measures in workplaces where workers are exposed to dusts or other particles. This can include using respiratory protection equipment, improving ventilation, and reducing exposure to hazardous materials. Early detection and treatment of pneumoconiosis can help to slow the progression of the disease and improve outcomes for affected individuals.
Eczema is a chronic, inflammatory skin condition characterized by dry, itchy, and scaly patches on the skin. It can appear anywhere on the body but is most commonly found on the face, neck, hands, and feet. Eczema is also known as atopic dermatitis, and it is not contagious.
There are several types of eczema, including:
1. Atopic dermatitis: This is the most common type of eczema, and it is often associated with allergies such as hay fever or asthma.
2. Contact dermatitis: This type of eczema is caused by exposure to an allergen or irritant, such as a chemical or detergent.
3. Seborrheic dermatitis: This type of eczema is characterized by redness and flaking on the scalp, face, or body.
4. Neurodermatitis: This type of eczema is caused by chronic itching and scratching, which leads to thickening and darkening of the skin.
5. Pompholyx: This is a type of eczema that occurs on the hands and feet.
The exact cause of eczema is not known, but it is thought to be related to an overactive immune system, allergies, and environmental triggers such as stress, cold weather, and certain foods. Treatment for eczema typically involves a combination of topical medications, oral medications, and lifestyle changes, such as avoiding triggers and moisturizing the skin.
Complications of eczema can include:
1. Infections: Eczema can increase the risk of bacterial, viral, and fungal infections, such as impetigo or herpes simplex.
2. Scratching and skin thickening: Chronic itching and scratching can lead to thickening and darkening of the skin, which can be unsightly and painful.
3. Emotional distress: Living with eczema can cause significant emotional distress, including anxiety and depression.
4. Sleep disturbances: Eczema can disrupt sleep patterns and cause fatigue, which can impact daily life and overall well-being.
5. Stigma and social isolation: People with eczema may experience stigma and social isolation due to the visible nature of the condition.
It is important for people with eczema to work closely with their healthcare provider to manage the condition and prevent complications. With appropriate treatment and self-care, many people with eczema are able to manage their symptoms and lead active, fulfilling lives.
Coal tar
... may be used in two forms: crude coal tar (Latin: pix carbonis) or a coal tar solution (Latin: liquor picis carbonis, ... coal tar is mostly traded as fuel and an application for tar, such as roofing. The total value of the trade in coal tar is ... Coal Tar Distillers". Igg.org.uk. Archived from the original on 2013-06-19. Retrieved 8 March 2013. "Coal Tar Oil , OEC". "Coal ... Coal tar is a thick dark liquid which is a by-product of the production of coke and coal gas from coal. It is a type of ...
Wright's Coal Tar Soap
... "the measurements have been chosen because so many of our readers are users of Wright's Coal Tar Soap". Wright's Coal Tar Soap ... manufacturers and proprietors of Wright's Coal Tar Soap and other coal tar specialities". It soon became necessary for the ... W.V. Wright & Co.'s coal-tar soap was first sold in 1860. It was originally named Sapo Carbonis Detergens, which remains a ... By 1898, John Charles Umney had taken over the management of the Coal Tar Soap section of the business. Readers of the Country- ...
Saleh Jo Tar coal mine
The Saleh Jo Tar Coal Mine is a coal mine located in Sindh. The mine has coal reserves amounting to 2 billion tonnes of coking ... coal, one of the largest coal reserves in Asia and the world. "Mineral deposits of Pakistan" (PDF). pakboi.gov.pk. 2012. ...
Coal Tar: How Corrupt Politics and Corporate Greed Are Killing America's Children
During their operation, the company stored coal tar in underground tanks. The tar was often sold for use as roofing tar among ... Taylorville Coal Tar Contamination Three Decades Later". NPR Illinois. Retrieved October 14, 2020. Clutter, Bill. "COAL TAR: ... The site that the coal tar was found on changed hands several times in the past century but was at one time owned by Central ... Coal Tar: How Corrupt Politics and Corporate Greed Are Killing America's Children is a 2018 book by private investigator and ...
Oil sands
... usually coal. Since then, coal gas has almost completely been replaced by natural gas as a fuel, and coal tar as a material for ... "Coal Tar". City of Kingston, Ontario. 2007. Retrieved 13 May 2008. "Alberta's oil sands". Government of Alberta. 2007. Archived ... Naturally occurring bitumen is chemically more similar to asphalt than to coal tar, and the term oil sands (or oilsands) is ... The word "tar" to describe these natural bitumen deposits is really a misnomer, since, chemically speaking, tar is a human-made ...
Dandruff
Coal tar causes the skin to shed dead cells from the top layer and slows skin cell growth. Essential oils, such as tea tree oil ... "Anti-Dandruff (coal tar)". WebMD. 16 August 2017. Archived from the original on 12 December 2010. Retrieved 21 October 2017. " ...
Taylorville, Illinois
Neuroblastoma Coal Tar Cancer. Clutterinvestigations.com. Retrieved on November 20, 2015. The case files for the case against ...
Destructive distillation
Coke, coal gas, gaseous carbon, coal tar, ammonia liquor, and coal oil are examples of commercial products historically ... Destructive distillation of a tonne of coal can produce 700 kg of coke, 100 liters of liquor ammonia, 50 liters of coal tar and ... Dry distillation Pyrolysis Thermolysis Cracking (chemistry) Lunge, George (1887). Coal-tar and ammonia. Gurney and Jackson. ... Currently the major industrial application of destructive distillation is to coal. Historically the process of destructive ...
Society of Chemical Industry (America Section)
"The Coal-Tar Industry Jubilee". The Chemical Engineer. V (1): 47. Retrieved 17 August 2016. "Sir William Perkin Here - Tells ...
Seborrhoeic dermatitis
Coal tar can be effective.[citation needed] Although no significant increased risk of cancer in human treatment with coal tar ... April 2010). "No increased risk of cancer after coal tar treatment in patients with psoriasis or eczema". The Journal of ... Other options may include salicylic acid, coal tar, benzoyl peroxide, and phototherapy. The condition is most common in infants ... caution is advised since coal tar is carcinogenic in animals, and heavy human occupational exposures do increase cancer risks. ...
Benzofuran
This colourless liquid is a component of coal tar. Benzofuran is the "parent" of many related compounds with more complex ... Benzofuran is extracted from coal tar. It is also obtained by dehydrogenation of 2-ethylphenol. Benzofurans can be prepared by ...
Prehnitene
It occurs naturally in coal tar. Prehnitene is one of three isomers of tetramethylbenzene, the other two being isodurene (1,2,3 ...
Spongiforma squarepantsii
... and it smells of coal tar. Microscopically, S. thailandica has spores with less prominent surface warts. Spongiforma ...
Berlin, New Hampshire
"Coal Tar Impregnated Wood Fibre Pipe". Retrieved November 3, 2011. e, Morse (May 26, 1981). "Cellulose floc granules and ...
Indole
It also occurs in coal tar. The corresponding substituent is called indolyl. Indole undergoes electrophilic substitution, ...
Brown Company
"Coal Tar Impregnated Wood Fibre Pipe". Retrieved November 3, 2011. "Cellulose floc granules and process". Retrieved November 5 ...
Isodurene
It occurs naturally in coal tar. Isodurene is one of three isomers of tetramethylbenzene, the other two being prehnitene (1,2,3 ...
Amaranth (dye)
Like all azo dyes, Amaranth was, during the middle of the 20th century, made from coal tar; modern synthetics are more likely ... "Aniline Wood Dye, Coal Tar Dyes". Craftsman Style. International Styles Network. 2005-2012. Retrieved August 15, 2014. ...
Quinaldine
... is recovered from coal tar. It can be prepared from aniline and paraldehyde via Skraup synthesis or from aniline and ...
Ganga Ram
They first pelted the statue with stones; then smothered its face with coal tar. Then a man made a garland of old shoes climbed ...
Anthracene
It is a component of coal tar. Anthracene is used in the production of the red dye alizarin and other dyes. Anthracene is ... Coal tar, which contains around 1.5% anthracene, remains a major source of this material. Common impurities are phenanthrene ... The mineral form of anthracene is called freitalite and is related to a coal deposit. A classic laboratory method for the ...
Sir Ganga Ram Hospital (Pakistan)
They first pelted the statue with stones; then smothered its face with coal tar. Then a man made a garland of old shoes and ...
Gaymer Cider Company
From Aertex to Wright's Coal Tar. History Press. pp. 116-. ISBN 978-0-7524-9612-2. Norfolk Record Office MC 297/8/1-26 Adrian ...
Naphthalene
The composition of coal tar varies with coal type and processing, but typical coal tar is about 10% naphthalene by weight. In ... In the early 1820s, two separate reports described a white solid with a pungent odor derived from the distillation of coal tar ... Most naphthalene is derived from coal tar. From the 1960s until the 1990s, significant amounts of naphthalene were also ... Naphthalene is the most abundant single component of coal tar. ... the coal tar producers are Koppers Inc., Ruetgers Canada Inc. ...
Triphenylene
... can be isolated from coal tar. It is also be synthesized in various ways. One method is trimerization of benzyne. ...
Shell Nigeria
People were running helter-skelter....The fire burnt sand into coal tar. Most of our people had to flee the community to ...
Azuline
... is a coal-tar blue dye that became popular for colouring silk in 1861. It was one of the first synthetic dyes. The name ... Chemists at first did not know the structure of the molecules in the coal tar dyes including azuline. Use of azuline was ... On colouring matters derived from coal tar". Quarterly Journal of the Chemical Society of London. 14 (1): 230. doi:10.1039/ ...
Polycyclic aromatic hydrocarbon
... by topically applying coal tar to rabbit ears. In 1922, Ernest Kennaway determined that the carcinogenic component of coal tar ... A century later, Richard von Volkmann reported increased skin cancers in workers of the coal tar industry of Germany, and by ... coal tar) was demonstrated to be carcinogenic. In the 1930s and later, epidemiologists from Japan, the UK, and the US, ... pyrene to that of the carcinogenic component of coal tar, the first time that a specific compound from an environmental mixture ...
1817 in the United Kingdom
John Kidd extracts naphthalene from coal tar. A typhus epidemic occurs in Edinburgh and Glasgow. John Constable paints Flatford ...
Smoke
Staff writer (1892). A dictionary of the coal tar colours. Heywood and Co. p. 8. ISBN 978-1409701699. Stewart, Gareth J.; ... Heavier hydrocarbons may condense as tar; smoke with significant tar content is yellow to brown. Combustion of solid fuels can ... Smoke can also be a component of ambient air pollution due to the burning of coal in power plants, forest fires or other ... Coal combustion produces emissions containing aluminium, arsenic, chromium, cobalt, copper, iron, mercury, selenium, and ...
Abietane
Abietenes from colophony, tar, and pitch have been identified in caulking used on ancient ships. Abietanes have been used to ... Additionally, abietanes are observed in sediments-both riverine and marine-and in coals, where they are often interpreted as ... ambers and coals". Organic Geochemistry. 10 (4-6): 877-889. doi:10.1016/s0146-6380(86)80025-0. ISSN 0146-6380. Killops, S. D. ( ... ambers and coals". Organic Geochemistry. 10 (4-6): 877-889. doi:10.1016/s0146-6380(86)80025-0. ISSN 0146-6380. (Articles ...
100,000,000 Guinea Pigs
... lemon flavor and artificial coal tar color. The book takes particular aim at the pharmaceutical market in the United States ...
Eastham Country Park
... the coal hulk Onyx, and in a separate lot the steamer Sapphire. Although no bids were received, private negotiations were ... and had purchased the paddle steamer River Tar for the ferry service. In the 1847 season the fare was reduced to threepence and ...
Geography of Madagascar
Madagascar has a number of natural resources, including graphite, chromite, coal, bauxite, rare Earth elements, salt, quartz, ... tar sands, semi-precious stones and mica. There are also fishing areas offshore and potential for hydropower. In 2011, it was ...
Rhodes, New South Wales
... coal tars), but to a lesser extent than the areas closer to the sea wall on the eastern shore of the bay. The remediation of ...
Greenpeace
... members Greenpeace have protested several times against coal by occupying coal power plants and blocking coal shipments and ... "Greenpeace activists block giant tar sands mining operation - Message to Obama and Harper: Climate leaders don't buy tar sands ... "BHP Coal Berth Blocked by Greenpeace Ship as Protest Continues". Bloomberg. 6 August 2009. Retrieved 4 January 2010. Vidal, ... June 2010 "Radford, New Greenpeace Boss on Climate Change, Coal, and Nuclear Power". The Wall Street Journal. 14 April 2009. ...
French submarine Gymnote (Q1)
Internally it was coated with coal tar to provide protection from spilled battery acid. The hull was supported by 31 circular ...
Paleontology in Kentucky
The state's coal beds are the remnants of ancient peat swamps. Fossil tree trunks and other plant fossils are often found in ... The quality and importance of Big Bone Lick as a fossil site rivals that of the similarly aged Rancho La Brea tar pits. Fossils ... the rocks above coal beds. The ancient swamps of Pennsylvanian Kentucky left behind many fossils. A fossil trackway preserved ...
Ralph Landau
ISBN 978-0-941901-13-0. Reisch, Marc S. (January 12, 1998). "From Coal Tar to Crafting a Wealth of Diversity". Chemical & ...
Louis Zamperini
Soon he claimed to be "beating the tar out of every one of them; but I was so good at it that I started relishing the idea of ... He was later taken to a new prison camp at a coal factory, and after much hardship, he was finally released. Following the war ...
1830s
In May and June 1831 in Wales, coal miners and others rioted for improved working conditions in what was known as the Merthyr ... March 24, 1832 - In Hiram, Ohio, a group of men beat, tar and feather Latter Day Saint movement founder Joseph Smith. October ...
2022 in the United States
April 7 The Senate unanimously passes legislation to ban imports of oil, gas, and coal from Russia. Ketanji Brown Jackson ... the Kansas Jayhawks rally from a 16-point deficit to defeat the 8th-seeded North Carolina Tar Heels, 72-69, in the National ...
History of the petroleum industry
The new oils were successful, but the supply of oil from the coal mine soon began to fail (eventually being exhausted in 1851 ... in English and Arabic) Treatise on Petroleum and Its Treatment, along with Various Kinds of Tar and Gums, 18th century Mir- ... Until the mid-1950s coal was still the world's foremost fuel, but after this time oil quickly took over. Later, following the ... The production of these oils and solid paraffin wax from coal formed the subject of his patent dated 17 October 1850. In 1850 ...
Lifebuoy (soap)
... a compound extracted from coal tar). The soaps manufactured today under the Lifebuoy brand do not contain phenol. Currently, ...
Victor Gustav Bloede (chemist)
One problem he faced was to purify benzene from the light tar oils, which was supplied in barrels by coal tar distilleries and ...
History of Sunderland
... the Wear Fuel Works distilled coal tar to produce pitch, oil and other products. After completion of the dock works, H. H. Wake ... As coal was required to heat the salt pans, a coal mining community began to emerge. Only poor-quality coal was used in salt ... Both salt and coal continued to be exported through the 17th century, but the coal trade grew significantly (2-3,000 tons of ... By 1889 two million tons of coal per year was passing through the dock. The eastern wharves, opposite the coal staiths, were ...
SCIEX
ISBN 978-0-08-046798-6. Chen, QF (2002). "Air Monitoring Of A Coal Tar Cleanup Using A Mobile TAGA LPCI MS MS". Journal of ...
Camp for Climate Action
Australia's Newcastle Coal Price Falls From Record (Update) Jesse Riseborough 14 July 2008 Bloomberg "COAL CARAVAN - route & ... particularly Canadian Tar Sands and ran until 25 August. The organisers took the site the day before the publicly announced ... Coal protest team glued to doors BBC News 11 August 2008 Vidal, John (15 December 2008). "Those Kingsnorth police injuries in ... The camp was on a squatted site in the Vale of York, situated close to several large power stations including Drax, a coal- ...
Knottingley Town Hall
Following the closure of Kellingley Colliery, the last deep coal mine in the UK, the last miners, their families and many ... After the company which owned the building got into financial difficulty, the proprietor of the Aire Tar Works, George Limnell ... "Thousands march through Yorkshire to mark end of deep coal mining at Kellingley". BBC News. BBC. 20 December 2015. Retrieved 28 ... "Thousands join march to mark closure of UK's last deep coal mine". The Guardian. 19 December 2015. Retrieved 28 August 2021. ( ...
Cookeville, Tennessee
The coal industry declined during the 1960s, and the Tennessee Central Railway was discontinued in 1968. Construction of a ... Mack Brown - head football coach of the North Carolina Tar Heels and former head football coach of the Texas Longhorns Watson ... This railway was used primarily to transport the coal and minerals of East Tennessee to the markets of the midstate region. ... With the advancement rail access, Cookeville began to industrialize with the rise of textile manufacturing, coal mining, and ...
Carpinteria Tar Pits
Petroleum seep Asphalt volcano Coal Oil Point seep field "Tar Pits Park". Carpinteria.com. Retrieved 2012-03-20. "Carpinteria ... and McKittrick Tar Pits (McKittrick) both also located in the US state of California. The Carpinteria Tar Pits are located in ... The Carpinteria Tar Pits were known to the Chumash people, who mined the asphalt and used it as a sealant for waterproofing ... The Carpinteria Tar Pits are a natural asphalt lake areas similar to Tierra de Brea Trinidad and Tobago, Lake Guanoco in ...
Petroleum industry in Canada
With the development of methods for extracting methane from coal seams, there has been a significant shift toward including ... model bet on by the biggest players in the tar sands, producers have recently (2018) encountered an over supply problem, and ... Energy portal Canada portal Climate change in Canada Coal in Canada Petroleum technician Renewable energy in Canada "Crude oil ...
Andrew Leach (economist)
Leach said that the oils sands "create about C$500 of value-added per tonne of CO2, against C$20-30 from coal-fired power ... The Economist cited Leach's statistics in its January 1, 2011 article "Muck and brass: Canada's tar sands", which compared ... "Muck and brass: Canada's tar sands". The Economist. January 1, 2011. Retrieved October 23, 2019. Gary, Lamphier (June 26, 2015 ...
Sports in Kentucky
The rivalry between the North Carolina Tar Heels and the Duke Blue Devils is perhaps the only in-state basketball rivalry that ... Kentucky Coal (Northern Frontier Football League) Kentucky Thoroughbreds (Gridiron Developmental Football League) Lexington Red ...
Oil megaprojects (2008)
Area: onshore (LAND), offshore (OFF), offshore deep water (ODW), tar sands (TAR). Type: liquid category (i.e. Natural Gas ... "Chinese coal producer to make liquid fuel in 2008, China View, September 17, 2007". Archived from the original on December 14, ... "China builds plant to turn coal into barrels of oil, Reuters UK, June 4, 2008". June 4, 2008. "Sinopec makes new oil/gas ...
Wright (disambiguation)
... a community college in Chicago Wright's Coal Tar Soap, a popular brand of antiseptic soap Wrightbus, an Irish bus body ...
Diesel engine
Typical fuels specifically intended to be used for diesel engines were petroleum distillates and coal-tar distillates such as ... Coal-tar creosote: 9,150 kcal·kg−1 (38.3 MJ·kg−1) up to 9,250 kcal·kg−1 (38.7 MJ·kg−1) Kerosene: up to 10,400 kcal·kg−1 (43.5 ... In his 1893 work Theory and Construction of a Rational Heat Motor, Rudolf Diesel considers using coal dust as fuel for the ... However, Diesel just considered using coal dust (as well as liquid fuels and gas); his actual engine was designed to operate on ...
Cresol
... s have an odor characteristic to that of other simple phenols, reminiscent to some of a "coal tar" smell. The name " ... About half of the world's supply of cresols are extracted from coal tar. The rest is produced by hydrolysis of chlorotoluenes ...
Marley Hill
... former tar beds and being able to smell tar which had seeped down into the coal seams, while contaminants such as a cyanide ... as well as the presence in the soil of large quantities of ash from coal fires. To increase wartime coal production, the ... further reducing demand for coal. Although power stations still had an enormous appetite for coal, this could be easily met by ... Coal was also mined from Blackburn Fell Drift, on the other side of the Stanley road, which was served by the Bowes Railway. It ...
HMS Triton (1796)
The convoy was carrying ship timbers, rosin, and tar, intended to help fit out new French privateers. After these convoy ... and recaptured the trader George which had been captured while sailing to Lisbon with coal, copper, and bottles. On 31 December ...
Exposure assessment of polycyclic aromatic hydrocarbons in refined coal tar sealant applications - PubMed
Exposure assessment of polycyclic aromatic hydrocarbons in refined coal tar sealant applications Seth McCormick 1 , John E ... Exposure assessment of polycyclic aromatic hydrocarbons in refined coal tar sealant applications Seth McCormick et al. Int J ... Background: Refined coal tar sealant (RCTS) emulsions are used to seal the surface of asphalt pavement. Nine of the 22 ...
ICSC 1415 - COAL-TAR PITCH
Personal protection: filter respirator for organic gases and particulates adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations ...
CDC - NIOSH Pocket Guide to Chemical Hazards -
Naphtha (coal tar)
Coal Tar Shampoo205.004/205AG-AH
COAL TAR (UNII: R533ESO2EC) (COAL TAR - UNII:R533ESO2EC) COAL TAR. 25 mg in 1 mL. ... THERAPEUTIC PLUS- coal tar shampoo FoodHold U.S.A., LLC. Disclaimer: Most OTC drugs are not reviewed and approved by FDA, ... Coal Tar Shampoo. 205.004/205AG-AH. Active ingredient. 2.5% Coal Tar Topical Solution USP ...
SCE&G provided misleading information on Congaree coal tar cleanup
Coal Tar | AustinTexas.gov
... the Austin City Council passed an amendment to the coal tar ban ordinance changing the definition from coal tar containing ... Wear rate of coal tar sealant in Austin (2006). *Effects of PAHs on benthic communities below coal tar sealed parking lots ( ... the Austin City Council passed an amendment to the coal tar ban ordinance changing the definition from coal tar containing ... Coal Tar,,img src=https://live.staticflickr.com/1701/24647452776_f0b2077a46.jpg width=500 height=357 alt=Coal Tar,,/a ...
Coal-Tar-Based Pavement Sealcoat, PAHs, and Environmental Health | U.S. Geological Survey
Coal-tar-based pavement sealcoat is a potent source of polycyclic aromatic hydrocarbon (PAH) contamination in urban and ... and coal-tar pitch is the residue that remains after the distillation of coal tar. Coal tar and coal-tar pitch are used in coal ... and coal-tar pitch is the residue that remains after the distillation of coal tar. Coal tar and coal-tar pitch are used in coal ... tar-based sealcoat products, although use of coal-tar pitch is more common than use of coal tar. Both coal tar and coal-tar ...
CDC - Immediately Dangerous to Life or Health Concentrations (IDLH): Coal tar pitch volatiles - NIOSH Publications and...
Basis for revised IDLH: The revised IDLH for coal tar pitch volatiles is 80 mg/m3 (as the benzene-soluble fraction) based on ... Other animal data: The major health effects resulting from long-term repeated exposure to coal tar pitch volatiles (CTPV) are ... NIOSH REL: 0.1 mg/m3 (cyclohexane-extractable fraction) TWA; NIOSH considers coal tar pitch volatiles to be potential ... 1972] have shown that the major health effects resulting from long-term repeated exposure to coal tar pitch volatiles (CTPV) ...
Coal Tar - Drugs and Lactation Database (LactMed®) - NCBI Bookshelf
Because of the potential toxicity of coal tar to the breastfed infant, alternate drugs are preferred.[1] If a coal tar product ... Coal tar applied topically to maternal skin can result in pyrene absorption by the infant, probably by skin-to-skin or skin-to- ... Wood tars allergy, cross-sensitization and coal tar.[Contact Dermatitis. 1990]. Wood tars allergy, cross-sensitization and coal ... Because of the potential toxicity of coal tar to the breastfed infant, alternate drugs are preferred.[1] If a coal tar product ...
Coal exports are a bigger threat than the tar-sands pipeline | Grist
Coal exports are a bigger threat than the tar-sands pipeline This post originally appeared on Sightline Daily. The planned ... To calculate the carbon-dioxide emissions from coal exports, I assumed that 110 million tons of Powder River Basin coal are ... My coal emissions accounting leaves out a lot. I did not count the emissions associated with mining, processing, rail shipping ... There are, in fact, quite a bit more direct emissions from burning the coal than from the oil. Thats true even when one counts ...
CREOSOTE, COAL TAR Resistant Orings, Xrings, Gaskets, Rubber products
CREOSOTE, COAL TAR Resistant O-Rings and Seals. Creosote and coal tar are derived from the distillation of coal tar and are ... COAL TAR. View some of our other material compatibility ratings with CREOSOTE, COAL TAR. If you dont see what youre looking ... When rubber is exposed to creosote and coal tar, the chemicals can react with the rubber and cause it to become brittle and ... Recommended material type for use with CREOSOTE, COAL TAR: FKM (Viton®). Viton ® o-rings from Marco Rubber offer excellent ...
Tar Sands Produce Dirtiest Coal on the Planet, Too | Bold Nebraska
Oil Change International released a report revealing how tar sands extraction hurts the climate even more than we have thought ... The proven tar sands reserves of Canada will yield roughly 5 billion tons of petcoke - enough to fully fuel 111 U.S. coal ... Tar Sands Produce Dirtiest Coal on the Planet, Too. By Bold Nebraska ... Rising petcoke production associated with tar sands and heavy oil production is helping to make coal fired power generation ...
Cytochrome P450 1b1 in polycyclic aromatic hydrocarbon (PAH)-induced skin carcinogenesis: Tumorigenicity of individual PAHs and...
Animals, Benzopyrenes, Carcinogens, Coal Tar, Cytochrome P-450 CYP1B1, DNA Adducts, Female, Gene Expression, Mice, Mice, ... and coal tar extract (CTE, SRM 1597a). Following 20 weeks of promotion with TPA the Cyp 1b1 null mice, initiated with DBC, ... Tumorigenicity of individual PAHs and coal-tar extract, DNA adduction and expression of select genes in the Cyp1b1 knockout ... Tumorigenicity of individual PAHs and coal-tar extract, DNA adduction and expression of select genes in the Cyp1b1 knockout ...
Coal-tar pitch as the matrix carbon precursor in carbon-carbon composites
Coal-tar pitch is a promising carbon matrix precursor for carbon-carbon composites. It has a suitable viscosity, high carbon ... This thesis is a study on the use of coal-tar pitch as carbon matrix precursor in carbon-carbon composites. [Continues.] ... Coal-tar pitch as the matrix carbon precursor in carbon-carbon composites. ...
Formation and fate of PAH during the pyrolysis and fuel-rich combustion of coal primary tar<...
Primary tar was produced in the fluidized-bed reactor by rapid coal pyrolysis at 600 °C. The freshly generated tar was ... Primary tar was produced in the fluidized-bed reactor by rapid coal pyrolysis at 600 °C. The freshly generated tar was ... Primary tar was produced in the fluidized-bed reactor by rapid coal pyrolysis at 600 °C. The freshly generated tar was ... Primary tar was produced in the fluidized-bed reactor by rapid coal pyrolysis at 600 °C. The freshly generated tar was ...
Subjects: Coal Tar - Digital Collections - National Library of Medicine Search Results
These Are the Best Shampoos for an Itchy Scalp, According to Dermatologists
Coal Tar. What It Is: Yes, its a byproduct of coal gas production, but its also been deemed an effective treatment for ... Most coal tar shampoos dont go above 0.5-percent grades, but this one offers a 1-percent concentration to give people with ... True+Real Coal Tar Shampoo (Pack of 2). Buy Now On Amazon. Price: $16.99 ... What It Targets: In shampoos, coal tar is optimal for countering seborrheic dermatitis and psoriasis. ...
Coal Tar Epoxy
Coal Tar - Guardian Driveway Sealing
Coal Tar. Coal tar, also commonly known as poly tar, airport grade, coal tar emulsion, refined tar based sealer, and coal tar ... Coal tar is a by product of coking, liquefaction or gasification of coal. Coal tar pitch is the product that remains after the ... Guardian Driveway Sealing does not use coal tar or coal tar based products, we only use environmentally friendly products for ... distillation of coal tar. It is then separated and the most viscous material (RT-12) is used to make coal tar based sealant. It ...
Sustainable Replacements for Coal Tar Pitch Binders used in the Foundation Industries - Henry Royce Institute
116,025 has allowed for the exploration of the use of wood tar biopitch (WTB) as a sustainable replacement for coal tar pitch ( ... The first three groups all use coal tar pitch (CTP) as a key material. The importance of this material for Morgan activities is ... CTP is a residue formed from the distillation of coal tar and is widely used as a carbonisable/graphitisable binder for many ... "This project has helped accelerate the replacement of a sunset fossil derived chemical (Coal Tar Pitch), which is used ...
Coal Tar
My-Spread Forum | Drilling through Tar & Coal formations
Drilling through Tar & Coal formations. Dear All, Normally we are facing operational challenges due to stuck pipe while ... Discussion Forum , Drilling Fluids , Drilling through Tar & Coal formations ... drilling through formations that contain tar & coal . we can have string stuck with failures to fish it & end up with BHA lost ... dissolving the Tar & what are the spotting procedures? ...
what is coal tar distillation Archives - chemwhite.com
What is coal tar distillation? When coal is subjected to destructive distillation, it yield coal gas, and coal tar. coal gas ... What is Coal tar Distillation?. Coal tar distillation is define as, it is obtained by cooling the gas that is formed by during ... the destructive distillation of coal with normal temperature. Check this - ...
Details for:
Coal tar creosote.
› WHO HQ Library catalog
PROTECTO 401 VS. POLYAMIDE COAL TAR EPOXY - Protecto 401
Ban on Toxic Coal Tar Sealants - Washington Conservation Action
WEC worked to pass a first-in-the-nation ban on toxic coal tar sealants, responsible for water pollution and contamination. ... Coal tar is a byproduct from the use of coal in steel manufacturing. Cleaning up coal tar contamination is expensive: cities ... Ban on Toxic Coal Tar Sealants. In a big legislative win, WEC helped secure the enactment of a first-in-the-nation ban on toxic ... including pollution from coal tar. This preventative measure protects Washingtonians health and reduces the need for cleanup ...
Influence of rhamnolipids from Pseudomonas PS-17 on coal tar and petroleum residue biodegradation - Lower Silesian Digital...
Which of the following is obtained from coal tar? - askIITians
Which of the following is obtained from coal tar? Our expert is working on this Class VIII Science answer. We will update the ... Which of the following is obtained from coal tar?. Which of the following is obtained from coal tar? ... Coal tar also produces naphthalene balls used to resist insects and other insects. A bitumen petroleum product is used in place ...
Creosote19
- Coal tar creosote can build up in plants and animals. (cdc.gov)
- coal, or from the resin of the creosote bush. (cdc.gov)
- Coal tar creosote is a thick, problems such as eczema or psoriasis. (cdc.gov)
- Eating herbal remedies containing the leaves from the tar pitch are usually thick, black, or dark-brown liquids or creosote bush, which are sold as dietary supplements. (cdc.gov)
- Coal tar products are used in medicines to ` Living in treated-wood houses that may result in air or treat skin diseases such as psoriasis, and also as animal and skin contact with creosote. (cdc.gov)
- Coal tar creosote is the most widely used wood preservative in the United States. (cdc.gov)
- Coal tar creosote is released to water and soil mainly as a result of its use in the wood preservation industry. (cdc.gov)
- Some components of coal tar creosote dissolve in water confusion, kidney or liver problems, unconsciousness, and and may move through the soil to groundwater. (cdc.gov)
- Instruct children not to come in contact with creosote- direct contact with the skin during wood treatment or treated wood when playing on or near railroad tracks, in manufacture of coal tar creosote-treated products, has ditches close to utility poles, in old barns or other farm resulted in skin cancer and cancer of the scrotum. (cdc.gov)
- Details for: Coal tar creosote. (who.int)
- Creosote is the name used for a variety of products: wood creosote, coal tar creosote, coal tar, coal tar pitch, and coal tar pitch volatiles. (cdc.gov)
- These products are mixtures of many chemicals created by burning of beech and other woods, coal, or from the resin of the creosote bush. (cdc.gov)
- Coal tar creosote is a thick, oily liquid typically amber to black in color. (cdc.gov)
- Components of creosote that do not dissolve in water will remain in place in a tar-like mass. (cdc.gov)
- Brief direct contact with large amounts of coal tar creosote may result in a rash or severe irritation of the skin, chemical burns of the surfaces of the eyes, convulsions and mental confusion, kidney or liver problems, unconsciousness, and even death. (cdc.gov)
- Long-term exposure to low levels of creosote, especially direct contact with the skin during wood treatment or manufacture of coal tar creosote-treated products, has resulted in skin cancer and cancer of the scrotum. (cdc.gov)
- The International Agency for Research on Cancer (IARC) has determined that coal tar is carcinogenic to humans and that creosote is probably carcinogenic to humans. (cdc.gov)
- Worker exposure to dibenzofuran may occur through inhalation and dermal contact at sites where coal tar, coal tar derivatives, or creosote are handled. (nih.gov)
- Coal tar creosote is a complex mixture typically composed of 85% PAHs and 2-17% phenolics. (nih.gov)
PAHs7
- Coal tar and coal-tar pitch, both used in sealcoat products, have extremely high concentrations of PAHs, and both are classified as known human carcinogens. (usgs.gov)
- Coal-tar-based pavement sealcoat typically contains 35,000 to 200,000 mg/kg (parts per million, or ppm) PAHs, about 100 times more PAHs than in used motor oil and about 1,000 times more PAHs than in sealcoat products with an asphalt (oil) base. (usgs.gov)
- There are many sources of PAHs to the environment, representing a wide range of PAHs concentrations, including asphalt (2-9 milligrams per kilogram, or mg/kg), tire particles (84 mg/kg), used motor oil (730 mg/kg), and coal-tar-based sealcoat (34,000-202,000 mg/kg). (usgs.gov)
- Concentrations of PAHs in runoff, sediment, soils, and dust near coal-tar-sealcoated pavement are substantially higher than concentrations in those media near concrete pavement, unsealed asphalt pavement, and asphalt pavement with asphalt-based sealcoat. (usgs.gov)
- Cytochrome P450 1b1 in polycyclic aromatic hydrocarbon (PAH)-induced skin carcinogenesis: Tumorigenicity of individual PAHs and coal-tar extract, DNA adduction and expression of select genes in the Cyp1b1 knockout mouse. (oregonstate.edu)
- Coal tar sealant products contain polycyclic aromatic hydrocarbons (PAHs), which are a group of organic chemicals formed during the incomplete burning of coal, oil, gas, or other organic substances. (cityofroseville.com)
- This study is a collaboration between NIH and CDC that is measuring exposure of coal tar sealant applicators to polycyclic aromatic hydrocarbons (PAHs) compounds. (nih.gov)
Pitch volatiles2
Distillation5
- Coal tar is a byproduct of the coking of coal, and coal-tar pitch is the residue that remains after the distillation of coal tar. (usgs.gov)
- Coal-tar pitch is the residue that remains after the distillation of coal tar, that is, the thick black liquid remaining after various oils are removed from coal tar for use in the manufacture of industrial and consumer products. (usgs.gov)
- CTP is a residue formed from the distillation of coal tar and is widely used as a carbonisable/graphitisable binder for many industrial applications. (royce.ac.uk)
- The residue from the distillation of high temperature coal tar. (europa.eu)
- A by-product of the destructive distillation of coal used as a topical antieczematic. (nih.gov)
Polycyclic5
- On October 17, 2019, the Austin City Council passed an amendment to the coal tar ban ordinance changing the definition from coal tar containing products to high PAH (polycyclic aromatic hydrocarbons) pavement products. (austintexas.gov)
- In 2003, City of Austin scientists identified coal tar-based pavement sealants as a significant source of polycyclic aromatic hydrocarbon (PAH) contamination in Austin area stream sediments. (austintexas.gov)
- Coal-tar-based pavement sealcoat is a potent source of polycyclic aromatic hydrocarbon (PAH) contamination in urban and suburban areas and a potential concern for human health and aquatic life. (usgs.gov)
- Unfortunately, coal tar contains a significant amount of polycyclic aromatic hydrocarbons, which can potentially be hazardous to the environment. (paversanddecks.com)
- Some cities have banned the use of coal tar for sealing driveways due to the hazards that polycyclic aromatic hydrocarbons can pose to aquatic wildlife in the local waterways. (paversanddecks.com)
Epoxy4
- Coal Tar Epoxy is a high-solids, two-component tar filled coating formulated to provide excellent film build in one or two coats. (aucuttspaint.com)
- In this work, the effect of erosion on corrosion behavior of coal tar epoxy coating was evaluated using electrochemical impedance spectroscopy (EIS) measurements. (issiran.com)
- The Effect of Erosion on Corrosion Protection Properties of Coal Tar Epoxy Coating', International Journal of Iron & Steel Society of Iran , 11(2), pp. 17-22. (issiran.com)
- Having been in the market for long have made us one of the reputed service provider of Coal Tar Epoxy Coating Services. (chauhancreation.in)
Pavement1
- Coal-tar-based sealcoated pavement: a major PAH source to ur. (pubpeer.com)
Chrysene1
- FVB/N mice wild-type, heterozygous or null for Cyp 1b1 were used in a two-stage skin tumor study comparing PAH, benzo[a]pyrene (BaP), dibenzo[def,p]chrysene (DBC), and coal tar extract (CTE, SRM 1597a). (oregonstate.edu)
Pyrene2
Phototherapy1
- Coal tar phototherapy for psoriasis reevaluated: erythemogenic versus suberythemogenic ultraviolet with a tar extract in oil and crude coal tar. (nih.gov)
Asphalt driveways1
- The use of coal tar sealers on asphalt driveways is a common practice. (cityofroseville.com)
Oils1
- Occupational exposure to soots, tars, and certain mineral oils is known to be carcinogenic according to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985) (Merck Index, 11th ed). (nih.gov)
Psoriasis1
- Coal tar products are used in medicines to treat skin diseases such as psoriasis, and also as animal and bird repellents, insecticides, animal dips, and fungicides. (cdc.gov)
Products6
- Most sealcoat products are either coal-tar or asphalt emulsion. (usgs.gov)
- Coal-tar-based sealcoat products typically are 20 to 35 percent coal tar or coal-tar pitch. (usgs.gov)
- Coal tar and coal-tar pitch are used in coal-tar-based sealcoat products, although use of coal-tar pitch is more common than use of coal tar. (usgs.gov)
- Some healthcare professionals recommend using products that contain tar extract to help ease eczema symptoms . (medicalnewstoday.com)
- Animal studies have also shown skin cancer from skin exposure to coal tar products. (cdc.gov)
- Ketchup was a soup of "waste products from canners, like coal-tar colors or starch paste. (cdc.gov)
Sealers2
- Coal tar sealers are prohibited (refer to section below). (cityofroseville.com)
- Coal tar needs to be applied by professionals due to the fact that you need to heat it up in order to apply it, and professionals have access to higher-quality asphalt emulsion sealers with a lower water content that does a better job of protecting your driveway compared to what you can purchase at a home improvement store. (paversanddecks.com)
Ultraviolet2
- In addition to protecting your driveway from oil, coal tar also shields the asphalt from ultraviolet light and open-air, preventing it from oxidizing and weakening. (paversanddecks.com)
- Like coal tar, an asphalt emulsion sealer will protect your driveway against air and ultraviolet light, which helps stop your asphalt driveway from oxidizing. (paversanddecks.com)
Toxicity1
- Because of the potential toxicity of coal tar to the breastfed infant, alternate drugs are preferred. (nih.gov)
Behavior1
- Samples of tar and coal - fire minerals collected from the mouth of vents provided insight into the behavior and formation of the coal fires . (bvsalud.org)
USGS1
- Since that time the United States Geological Survey (USGS) and the City have conducted additional research that corroborates this finding, concluding that coal tar sealants contribute the majority of stream PAH loading in the Austin area. (austintexas.gov)
Dust2
- The coal tar can chip off when you drive over it, allowing the coal tar dust to make its way into nearby lakes and streams when it's carried away by rainwater. (paversanddecks.com)
- Thankfully, this isn't as much of a concern when using coal tar on residential driveways, since residential driveways see less vehicle traffic compared to roads or parking lots - less traffic means that less coal tar dust will be generated. (paversanddecks.com)
Naphthalene1
- Coal tar also produces naphthalene balls used to resist insects and other insects. (askiitians.com)
Topical1
- A woman was treated with topical coal tar-containing medications for the treatment of atopic dermatitis. (nih.gov)
Incomplete1
- As a combustion product, dibenzofuran may be released from the incomplete combustion of coal biomass, refuse, diesel fuel and residual oil, as well as from tobacco smoke (NLM, 2000a). (nih.gov)
Thick2
- In order to apply it, a sealcoating service heats it up in a cauldron in order to liquefy it, then sprays it onto your driveway in order to create a thick layer of coal tar on top of the asphalt. (paversanddecks.com)
- Coal tar and coal tar pitch are usually thick, black, or dark-brown liquids or semi-solids, with a smoky odor. (cdc.gov)
Roads1
- A bitumen petroleum product is used in place of coal tar to metallize the roads these days. (askiitians.com)
Skin2
High2
Common1
- For historical and economic reasons, coal-tar-based sealcoat is more common east of the Continental Divide (except in those states, counties, and municipalities where its use is prohibited), and asphalt-based sealcoat is more west of the Continental Divide. (usgs.gov)
REACH1
- In collaboration with Morgan advanced materials, this ICP-Royce funded project, awarded £116,025 has allowed for the exploration of the use of wood tar biopitch (WTB) as a sustainable replacement for coal tar pitch (CTP), a 'sunset' material under REACH guidelines. (royce.ac.uk)
Motor oil1
- The main advantage of coal tar is that it prevents motor oil from damaging your asphalt driveway. (paversanddecks.com)
Learn1
- Learn more about coal-tar-based sealcoat here. (usgs.gov)
Choose1
- When sealcoating your driveway, you'll be able to choose between a coal tar sealer and an asphalt emulsion sealer. (paversanddecks.com)
Treatment1
- The mother breastfed her infant (extent not stated) and the infant's urine was collected before the start of treatment and 4 times during maternal therapy with coal tar. (nih.gov)
Material2
- The first three groups all use coal tar pitch (CTP) as a key material. (royce.ac.uk)
- The importance of this material for Morgan activities is reflected, for example, by an expansion in Morgan's factory in Swansea, which has just completed an investment in a new production line to extrude coal tar pitch-graphite particulate materials. (royce.ac.uk)
Wood1
- During this project, we produced Wood Tar Biopitch (WTB) from distilling sawdust, mixed it with graphite particles and then carbonising and graphitizing them to produce carbon-carbon composites. (royce.ac.uk)
