Benzene or organic compounds. Medical search. Frequent questions

Volatile organic compounds include extremely harmful hazardous air pollutants like benzene, formaldehyde, and toluene. (sierraclub.org)
Scientists have identified volatile organic compounds (VOCs) such as benzene, toluene, ethylbenzene and xylene. (cpt.org)
The main volatile organic compounds found at gasoline stations are benzene, toluene, ethylbenzene, and xylene isomers (BTEX). (hindawi.com)
This process, associated with gasoline distribution, can be an important source for emission of volatile organic compounds (VOCs) [ 2 ], with benzene, toluene, ethylbenzene, and xylene isomers (BTEX), the main volatile hydrocarbons originating from petroleum. (hindawi.com)
Trace amounts of benzene can be found in chemicals like toluene, ethylbenzene and xylene, and it is used to make chemicals like cumene and cyclohexane. (ohsonline.com)
And methane comes laden with other toxic pollutants, like benzene, toluene, ethylbenzene, xylene and other smog-forming organic compounds. (nbcnews.com)
Multiple multivariate logistic regression models were used to assess the associations of individual organic solvent exposures as measured by blood biomarkers (1,4-dichlorobenzene, benzene, ethylbenzene, styrene, toluene, o-xylene, and m-/p-xylene) with self-reported hearing loss , audiometrically assessed hearing loss , and self-reported tinnitus. (cdc.gov)

In this component, personal exposure to air toxics (specifically, volatile organic compounds, or VOCs) were assessed through the use of passive exposure monitors (or badges) worn by participants for a period of 48-72 hours. (cdc.gov)
VOCs are volatile organic compounds. (cdc.gov)
The Center will be dedicated to understanding and mitigating adverse birth outcomes and serious developmental health problems that have been associated with urban environmental exposure to volatile organic chemcials (VOCs), a special class of pollutant found in the subsurface of post-industrial cities like Detroit. (eurekalert.org)
VOCs are a group of aromatic or chlorinated organic compounds that transition to a vapor or gas. (eurekalert.org)
Ozone, or photochemical smog, is produced in the lower atmosphere by the action of sunlight on oxides of nitrogen and volatile organic compounds (VOCs). (newscientist.com)

They may be grouped further into aliphatic-chain compounds, such as n -hexane, and as aromatic compounds with a 6-carbon ring, such as benzene or xylene. (medscape.com)

They include formaldehyde and benzene, household fumes and odours. (dyson.com.au)
You also have to look out for consumer goods and cleaning supplies that can release pollutants like formaldehyde, benzene and other volatile organic compounds. (npr.org)
It off-gasses chemicals like formaldehyde, acetate and benzene, which can cause respiratory problems, headaches and worse. (pressherald.com)

It is soluble in aromatic hydrocarbons (e.g., benzene) and chlorinated hydrocarbons when heated. (actionext.com)

The current limit for TCE in drinking water is 5 μg/L. Other contaminants detected in finished water at the Hadnot Point treatment plant included DCE (trans 1,2-dichloroethylene), PCE, benzene, and vinyl chloride. (cdc.gov)

The World Health Organization has said there's no safe level of benzene exposure when it comes to cancer risk. (nbcnews.com)
The API study concluded that the only "safe" level of benzene exposure is no exposure at all. (ohsonline.com)

Acrolein is a highly reactive, colorless, and volatile organic compound with a strong odor. (electroniccigarettesource.com)
Benzene is a volatile organic compound with the chemical formula C6H6. (electroniccigarettesource.com)
Airborne particle diameter and number concentration and total volatile organic compound concentrations were measured using real-time instruments. (cdc.gov)
For these same machines, total volatile organic compound ERs (microg/min) ranged from 1.9x104 (acrylonitrile butadiene styrene and polycarbonate) to 9.4x 104 (Ultem). (cdc.gov)
total volatile organic compound ERs were similar regardless of the lid position. (cdc.gov)

Information on levels of exposure to these compounds is essential to determine the need for regulatory mechanisms to reduce the levels of hazardous air pollutants to which the general population is exposed. (cdc.gov)
In response, we rapidly launched disaster response activities to monitor air pollutants (total volatile organic compounds (TVOCs), fine particulate matter (PM2.5), black carbon (BC), and ultra-fine particles (UFPs) during the fire in two affected communities. (cdc.gov)
A study published Thursday in the journal Environmental Science and Technology found at least 12 hazardous air pollutants emitted from gas stoves in California, including benzene - a chemical known to cause cancer in some people with long-term exposure. (nbcnews.com)

and catalytic bead or infrared sensors for combustible gases like butane or benzene. (ohscanada.com)

The resulting historical sequence has then been compared with the dates when changes in regulatory levels of benzene were proposed by a number of industrial safety committees. (karger.com)
From the analyses, it is clear that the decision of other 'key' committees is more important than the changes in the toxicological database in prompting changes in regulatory levels of benzene. (karger.com)
Indoor air generally contains levels of benzene higher than those in outdoor air. (ohsonline.com)

They also calculated a household's benzene exposure based on the size of the kitchen, the room's ventilation level, how much of the chemical was present and whether the stoves were leaking when they were turned off. (nbcnews.com)
The results showed that the leakiest stoves exposed people to indoor concentrations of benzene that were up to seven times the safe exposure level set by the California Environmental Protection Agency. (nbcnews.com)
Over time, such exposure might increase a person's risk of blood disorders or reproductive issues, although scientists are still learning about how benzene affects health. (nbcnews.com)
a large group of chemicals, including benzene, that may increase the risk of certain cancers, birth defects or cognitive impairment among people with long-term exposure. (nbcnews.com)
Andrea De Vizcaya Ruiz, an associate professor of environmental and occupational health at the University of California, Irvine, who wasn't involved in the study, said that people can get exposed to small amounts of benzene when they fill up their cars' gas tanks or sit by a fireplace but that exposure to high amounts over long periods of time is worrisome. (nbcnews.com)
Prolonged exposure to benzene can damage white blood cells and bone marrow, causing anaemia or even leukaemia, as well as harming the immune system. (newscientist.com)
The American Conference of Governmental Industrial Hygienists (ACGIH) proposes to reduce the eight-hour time-weighted average exposure threshold limit value (TLV) for benzene to 0.02 ppm and reduce the 15-minute short-term exposure limit (STEL) to 0.1 ppm. (ohsonline.com)
The U.S. National Occupational Exposure Survey (1981-1983) estimated that about 272,300 workers (143,000 women) were potentially exposed to benzene in the U.S. alone. (ohsonline.com)
The evidence is clear that all workplaces should be reassessed for benzene vapor to determine occupational exposure if the ACGIH TLV and STEL are reduced. (ohsonline.com)
In 1928, medical experts recognized a connection between benzene exposure and leukemia. (ohsonline.com)
PURPOSE: Exposure to organic solvents and noise may be causal agents in the development of hearing loss and tinnitus. (cdc.gov)
The objectives of the present study were to examine the association of organic solvents with hearing loss and tinnitus and to assess the interaction of organic solvent and occupational noise exposure on hearing loss and tinnitus. (cdc.gov)
Organic solvents found to be statistically significantly associated with the outcome after adjusting for covariates were tested for interaction with occupational noise exposure. (cdc.gov)
Personal exposure to metals (aluminum, iron) and 12 different organic chemicals were all below applicable NIOSH Recommended Exposure Limit values, but results are not reflective of all possible exposure scenarios. (cdc.gov)
Personal exposures to metals (aluminum and iron) and eight volatile organic compounds were all below National Institute for Occupational Safety and Health (NIOSH)-recommended exposure levels. (cdc.gov)
Smoking is a widespread addiction among on hearing may compound the effects of young people and the damage caused by in- exposure to occupational noise. (who.int)

Benzene is an aromatic hydrocarbon derived from petrol. (newscientist.com)

It belongs to the family of compounds known as catecholamines and derivatives. (hmdb.ca)

Aromatic organic compounds that consist of a benzene ring with two hydroxyl functional group substitutions. (fishersci.com)

Catechols are compounds containing a 1,2-benzenediol moiety. (hmdb.ca)
The variation of functionalities in the benzene moiety was well-tolerated, and only a moderate difference in yield and degree of purity was noticed. (lu.se)

Ozone-forming pollution is made up of volatile organic compounds which are prevalent in oil, gas and petrochemical development, as well as oxides of nitrogen as a result of burning fossil fuels like coal and fracked gas. (sierraclub.org)
When the EPA takes its legally required action to increase clean air protections in Houston, facilities in the Ship Channel area will face stronger limits on the harmful volatile organic compounds and oxides of nitrogen they generate. (sierraclub.org)

Benzene is also a natural part of crude oil, gasoline, and cigarette smoke. (cdc.gov)
Benzene occurs naturally in petroleum products (e.g. crude oil and gasoline), and is also added to unleaded gasoline for its octane-enhancing and anti-knock properties. (ohsonline.com)

The method has been modified to use 3M 3520 Organic Vapor Monitors (OVM) (manufactured without glued-on labels) as the sampling media and gas chromatography/mass spectrometry (GC/MS) as the detection device (2). (cdc.gov)

The benzene in indoor air comes from products that contain benzene such as glues, paints, furniture wax and detergents. (ohsonline.com)

But benzene isn't the only worrisome chemical that comes from stoves, nor are the emissions limited to California. (nbcnews.com)
Benzene emissions from a gas stove, even while it's off, can produce in some cases concentrations of benzene in your house that are equivalent to living with a smoker," Lebel said. (nbcnews.com)
Benzene levels in the air can be elevated by emissions from burning coal and oil, benzene waste and storage operations, and evaporation during transfer at gasoline service stations. (ohsonline.com)
A new federal complaint accused the BP unit of breaking rules limiting benzene in refinery wastewater streams and emissions of hazardous and volatile air contaminants. (clickondetroit.com)
Exhaust from gasoline and diesel engines is the largest source of NOx emissions in the U.S. NOx compounds are a source of particulates, acid deposition, strong acid aerosols, and ozone pollution. (env-econ.net)
Methods Airborne particle and organic chemical emissions and personal exposures were characterized using real-time and time-integrated sampling techniques in four manufacturing facilities using industrial-scale material extrusion and material jetting AM processes. (cdc.gov)

Benzene is a colorless liquid with a sweet odor that evaporates into the air very quickly and dissolves slightly in water. (cdc.gov)
Benzene or benzol is a clear, colorless, highly flammable liquid with a kind of sweet odor. (ohsonline.com)
Benzene is a flammable, organic chemical compound that is a colorless liquid with a sweet aroma. (drbenkim.com)

Roberts was a pioneer in the field of physical organic chemistry. (caltech.edu)
He brought nuclear magnetic resonance (NMR) spectroscopy to organic chemistry, allowing chemists to determine the structures of complex biological molecules. (caltech.edu)
Jack Roberts put a firm intellectual underpinning to how reactions in organic chemistry proceed from reactant to product,' says Peter Dervan, the Bren Professor of Chemistry at Caltech. (caltech.edu)
Back in the 1950s, long before magnetic resonance imaging (MRI) machines became a staple of orthopedic clinics, Roberts's work with NMR revolutionized organic chemistry, enabling chemists to characterize the structure of organic molecules and to study rapidly equilibrating conformations, or shapes, of molecules in solution. (caltech.edu)
At Caltech, chemistry division chair Linus Pauling bought an NMR machine for Roberts for the study of organic compounds-the first such machine ever to be sold to a university. (caltech.edu)

Benzene is a component of many industrial products derived from coal and petroleum and it is found in gasoline and other fossil fuels. (ohsonline.com)
Industrial discharge, disposal of products containing benzene and gasoline leaks from underground storage tanks release benzene into water and soil. (ohsonline.com)

Activated Oxygenreacts with organic and inorganic substances neutralizing ammonia, ethylene and pesticides,thus enhancing the taste of food. (healthandmed.com)

Consisting of an amine attached to a benzene ring, aniline is the prototypical aromatic amine. (rcsb.org)
It can be a primary (R-NH2), a secondary (R',R''-NH) or a tertiary amine (R',R'',R'''-N), where R represent an alkyl or other organic substituent. (engineeringtoolbox.com)

Table 1 lists common sources of organic solvent exposures. (medscape.com)
Personal exposures for metals and volatile organic compounds were measured in the breathing zone of operators. (cdc.gov)

Changes in density of aqueous solutions with changes in concentration at 20°C. Density of some sugars, alcohols and other organic substances in water is plotted as function of wt%, mol/kg water and mol/l solution. (engineeringtoolbox.com)
Some endophytes express the ability to produce the same bioactive compounds as their plant hosts, making them a more sustainable industrial supply of these substances. (bvsalud.org)

Workers in several industrial processes may be exposed to benzene fumes,with leukaemia being a possible adverse health effect. (karger.com)

Benzene is classified by the International Agency for Research on Cancer (IARC) as a carcinogen for humans (Group 1), associated with the development of chronic myeloid leukemia, multiple myeloma, acute myeloid leukemia in children, and lung cancer [ 6 ]. (hindawi.com)
Volatile organic compounds help create smog-produce ozone, implicated in various lung ailments. (clickondetroit.com)

In the months following the fire, the 7-day mean ambient concentration of benzene from 12 homes was 0.13+/- 0.10 parts per billion (ppb) and the 6-week mean ambient concentrations of PM2.5 and TVOCs were 13 +/- 6 microg/m3 and 108 +/- 98 ppb, respectively. (cdc.gov)
Typically, the concentration of benzene in these fuels is 1 to 2 percent by volume. (ohsonline.com)
The derivatized extracts from culture liquid showed the 1.633 mol l-1 (9.691 mg l-1) concentration of polyphenol compounds. (bvsalud.org)

I was particularly interested in the figures for ozone and benzene. (newscientist.com)

I know that benzene diazonium chloride couples with phenol and aniline. (stackexchange.com)
Aniline, phenylamine or aminobenzene is an organic compound with the formula C6H5NH2. (rcsb.org)

Benzene is considered a confirmed human carcinogen by ACGIH, International Agency for Research on Cancer (IARC), National Toxicology Program (NTP) and the U.S. Environmental Protection Agency (EPA). (ohsonline.com)
An initial air monitoring reading detected benzene , a known carcinogen, in the air, according to an LDEQ field interview document from the incident. (nationofchange.org)

Arenes tend to undergo substitution, rather than addition, because substitutions allows the very stable benzene ring to remain intact. (docbrown.info)

In California, especially leaky stoves exposed people to indoor concentrations of benzene up to seven times the state's safety limit. (nbcnews.com)
A custom-built ventilated enclosure evaluated at one facility was capable of reducing particle number and total organic chemical concentrations by 99.7% and 53.2%, respectively. (cdc.gov)

We call these kinds of compounds amphiphilic molecules, and when we put them in water they come together and form spherical particles with a hydrophobic core and a hydrophilic outer surface. (titech.ac.jp)

Can benzene diazonium chloride always participate in a coupling reaction with any compound that contains a phenyl group? (stackexchange.com)
That made me think, can a coupling reaction occur between benzene diazonium chloride and say, benzene or chlorobenzene or any compound that has a phenyl group?Ann if not, then what kind of compounds will it react with? (stackexchange.com)

The five reactions described Part 10.8 are electrophilic substitution reactions involving the generation of a powerful electrophile (electron pair acceptor) which subsequently attacks the electron rich π (pi) electron system of the benzene ring. (docbrown.info)

This is a much more powerful electrophile, i.e. electron pair acceptor , than the original nitric acid, and is needed to attack the very stable aromatic ring of benzene. (docbrown.info)
The new ultra-high performance super- critical fluid chromatography method was also applied for the qualitative and quantitative analysis of lignin-derived phenolic compounds obtained upon alkaline cupric oxide oxida- tion of a commercial humic acid. (lu.se)
Ten out of the previous eleven model compounds could be quantified in the oxidized humic acid sample. (lu.se)

Propylene glycol is a chemical compound which has a wide range of applications in industry, food, and pharmaceuticals. (electroniccigarettesource.com)
Overall, propylene glycol is an essential chemical compound with numerous applications in various industries. (electroniccigarettesource.com)

See also density for n-alkanes, alcohols and acids and density, boiling and melting points of nitrogen and sulfur compounds. (engineeringtoolbox.com)
A compound or functional group that contain a basic nitrogen atom with a lone pair. (engineeringtoolbox.com)

Benzene is also commonly found in the environment. (ohsonline.com)

Natural sources of benzene include volcanoes and forest fires. (cdc.gov)
The revision notes include full diagrams and explanation of the mechanisms and the 'molecular' equation and reaction conditions and other con-current reaction pathways and products are also explained for the reaction mechanisms of aromatic hydrocarbons like benzene and methylbenzene. (docbrown.info)
In this chapter, electrophilic agents nogenicity from studies of exposed (benzene, 1,3-butadiene, and eth- include direct-acting electrophilic humans. (who.int)

Additionally, ink and variety of painting products, such as spray paints, base and top coat paints, sealers, lacquers and stains, also contain some portions of benzene. (ohsonline.com)

It is an organic substance that is found in Canada and elsewhere primarily as a chemical intermediate in a variety of industries. (gc.ca)
They found benzene in 99% of the samples. (nbcnews.com)

Some industries use benzene to make other chemicals which are used to make plastics, resins, and nylon and synthetic fibers. (cdc.gov)
Conclusion Industrial-scale AM machines using thermoplastics and resins released particles and organic vapors into workplace air. (cdc.gov)

It has the ability to completely destroy not only bacteria, but also viruses, spores,fungus, mold, mildew, parasites, and many other contaminants while at the same time breakingdown dissolved organic materials by oxidation on a molecular level leaving oxygen as it's onlyby-product! (healthandmed.com)
A BP subsidiary will pay a $40 million penalty and install technology to control releases of benzene and other contaminants at its Whiting oil refinery on the Indiana shoreline of Lake Michigan, Biden administration officials said Wednesday, May 17, 2023. (clickondetroit.com)

Also, examples of the structures of the sulfur compounds thiols, dialkyl sulfides, methylalkyl sulfides, ethyl alkyl sulfides, isopropyl alkyl sulfides, diisoalkyl sulfides, dialkyl disulfides and alkylthiophenes are shown in the table below. (engineeringtoolbox.com)

Historically, benzene was used as a degreaser of metals and a solvent for organic materials. (ohsonline.com)

Based on density functional theory at GGA/PBE/DNP computational level, this study proposed a covalent organic framework called B6N6 for using a cathinone drugs (CA) detection sensor. (researchgate.net)

All 3-d printers that were monitored released ultrafine and fine particles and organic vapors into workplace air. (cdc.gov)

It is an aromatic organic compound with the molecular formula C6H6. (ohsonline.com)

Anatomy1

Organisms8

Diseases1

Chemicals and Drugs67

Analytical, Diagnostic and Therapeutic Techniques and Equipment12

Psychiatry and Psychology1

Phenomena and Processes25

Disciplines and Occupations3

Technology, Industry, Agriculture4

Information Science2

Health Care18

Toluene7

VOCs5

Xylene1

Formaldehyde3

Chlorinated hydrocarbons1

Trans 1,2-dichloroethylene1

Level of benzene exposure2

Volatile organic5

Pollutants3

GASES1

Levels of benzene3

Exposure16

Aromatic hydrocarbon1

Derivatives1

Hydroxyl functional group1

Moiety2

Oxides of nitro2

Crude oil2

Vapor1

Detergents1

Emissions6

Colorless3

Chemistry5

Gasoline2

Pesticides1

Amine2

Exposures2

Substances2

Fumes1

Lung2

Concentration3

Ozone1

Aniline2

Carcinogen2

Substitutions1

Concentrations2

Molecules1

Chloride2

Electrophilic substitution1

Acid3

Chemical compound2

Nitrogen2

Commonly1

Include3

Lacquers1

Found2

Resins2

Contaminants2

Isopropyl1

Metals1

Drugs1

Ultrafine1

C6H61