On Mars, significant amounts (0.4 - 0.6 %) of perchlorate ions were detected in dry soil by the Phoenix Wet Chemistry Laboratory and later confirmed with the Mars Science Laboratory. Therefore, the ability of Hydrogenothermus marinus, a desiccation tolerant bacterium, to survive and grow in the presence of perchlorates was determined. Results indicated that H. marinus was able to tolerate concentrations of sodium perchlorate up to 200 mM (≙ 1.6 %) during cultivation without any changes in its growth pattern. After the addition of up to 440 mM (≙ 3.7 %) sodium perchlorate, H. marinus showed significant changes in cell morphology; from single motile short rods to long cell chains up to 80 cells. Furthermore, it was shown that the known desiccation tolerance of H. marinus is highly influenced by a pre-treatment with different perchlorates; additive effects of desiccation and perchlorate treatments are visible in a reduced survival rate. These data demonstrate that thermophiles, especially H. marinus,
Data & statistics on Ammonium Perchlorate (APC): ชื�อสารเคมีอันตราย (อังกฤษ) AMMONIUM BIFLUORIDE AMMONIUM CHLORIDE AMMONIUM DICHROMATE AMMONIUM FLUORIDE AMMONIUM HYDROGEN DIFLUORIDE AMMONIUM PERCHLORATE AMMONIUM POLYSULPHIDES AMMONIUM SALT OF DNOC AMMONIUM SULFAMATE AMMONIUM BIS(2,4,6-TRINITROPHENY)AMINE AMYL ACETATE, ALL ISOMERS AMYL ALCOHOL,except tert-PENTANOL AMYL FORMATE AMYL PROPIONATE 4-AMINODIPHENYL ANILINE ANILINE(SALTS) o-ANISIDINE p-ANISIDINE ..., Cyclic voltammograms of C60 /Pd films in acetonitrile containing 1 0.10 M tetra n-hexyl ammonium perchlorate, 2 0.10 M tetra n-butyl ammonium perchlorate, 3 0.10 M tetra ethyl ammonium perchlorate, and 4 0.07 M tetra methyl ammonium perchlorate. The sweep rate was 50 mV/s. The C60 /Pd films were grown under cyclic voltammetry, A mixture of Octogen (NMX) and TNT 70/30 and 75/25. Performance values...
In response to a push from lawmakers, the State Water Resources Control Board has called a hearing to evaluate progress toward cleaning up widespread perchlorate contamination emanating from a 160-acre industrial site in Rialto.. The four-member board is asking area water agencies, affected communities and users of the land who are responsible for paying for cleanup to present information on legal and technical developments since 2007, when the board last held an evidentiary hearing on the case. The informational hearing will be at 9 a.m. July 17 at the California Environmental Protection Agency headquarters in Sacramento.. perchlorate.graphic. The hearing is the latest move in a long-running dispute over cleanup of groundwater serving Rialto, Colton and Fontana. Perchlorate, an ingredient in fireworks and rocket fuel, and trichloroethylene, a solvent known as TCE, were dumped on the ground or burned in pits for decades beginning in the 1940s and seeped into underground basins.. Perchlorate and ...
Sodium Perchlorate Monohydrate 98%Min. - Product Identification CAS No. : 7791-07-3 EINECS No. : 231-511-9 H.S. Code : 2829.900090 Formula : NaClO4.H2O Molecular Weight : 140.46 Synonyms : Perchloric Acid, Sodium Salt, Monohydrate - Physical And...
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Perchlorate is both a man-made and naturally occurring chemical. It is used in rocket fuel, explosives, fireworks, and other products. Naturally occurring perchlorate is produced through atmospheric processes and then settles on surface water or land. Perchlorate can disrupt the uptake of iodide in the thyroid, potentially interfering with thyroid function and negatively affecting fetal and infant brain development and growth. As of June 2010, there is no federal regulatory standard for perchlorate in drinking water, and the Environmental Protection Agency (EPA), which has the authority to regulate contaminants in public drinking water systems, had not determined whether to establish one. The Department of Defense (DOD), the National Aeronautics and Space Administration (NASA), and the Department of Energy (DOE) are the primary federal users of perchlorate. GAO was asked to examine (1) what is known about the extent to which perchlorate occurs in the nations water and food supply and its likely ...
A comparative study of iodine and potassium perchlorate metabolism in the laying hen. 2. Uptake, distribution, and excretion of potassium perchlorate.: The conc
Press Release issued Apr 20, 2015: 2015 Global Potassium Perchlorate Industry Report is a professional and in-depth research report on the worlds major regional market conditions of the Potassium Perchlorate industry, focusing on the main regions (North America, Europe and Asia) and the main countries (United States, Germany, Japan and China).
Perchlorate is a naturally occurring inorganic anion used while an element of great rocket gasoline, explosives, and pyrotechnics. predicated on eating intake data. The power of perchlorate to stop sufficient iodide uptake with the thyroid might have been decreased with the iodine-sufficient position of the newborns examined (median urinary iodide 125 g/L). Additional research is Mouse monoclonal to HK1 required to find whether JTP-74057 these perchlorate intake dosages result in any health results. Introduction Perchlorate can be an inorganic anion found in solid rocket gasoline, explosives, and pyrotechnics (1). It forms normally in the atmosphere and accumulates in arid locations (2, 3). Perchlorate is normally widespread in the surroundings, resulting in individual publicity. Such publicity is a wellness concern because sufficiently high dosages are recognized to impair thyroid function by competitively inhibiting iodide uptake (4, 5). If the dosages that derive from environmental publicity ...
The U.S. government said Wednesday it plans to limit the amount of perchlorate, a chemical found in rocket fuel, explosives and bleach present in drinking water. The Environmental Protection Agency (EPA) said in a statement that studies have shown a link between consuming perchlorate and thyroid problems in pregnant mothers and babies. "Scientific research indicates that perchlorate may disrupt the thyroids ability to produce hormones that are critical to developing fetuses and infants," the EPA said.. "Monitoring data show more than four percent of public water systems have detected perchlorate and between five million and 17 million people may be served drinking water containing perchlorate.". The EPA said it decided to reverse the decision the George W. Bush administration made in 2008 not to regulate water for the chemical, after the agency received 39,000 public comments and reviewed research by health experts. "Our decisions are based on extensive review of the best available science and ...
The U.S. Environmental Protection Agency received a six-month extension for finalizing the rule of regulating perchlorate in drinking water. The deadline is now June 19, 2020 to finalize the rule.. The EPA is proposing to set both the enforceable maximum contaminant level (MCL) for the perchlorate regulation and the perchlorate maximum contaminant level goal (MCLG) at 0.056 mg/L (56 µg/L). The EPA is proposing requirements for water systems to conduct monitoring and reporting for perchlorate and to provide information about perchlorate to their consumers through public notification and consumer confidence reports.. The proposal includes requirements for primacy agencies that implement the public water system supervision program under the Safe Drinking Water Act. It also includes a list of treatment technologies that would enable water systems to comply with the MCL, including affordable compliance technologies for small systems serving 10,000 persons or less.. The Natural Resources Defense ...
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The increases are disturbing in light of the threat posed by perchlorate to childrens brain development and the emerging science showing the risk at lower levels is greater than thought a decade ago. The risk is particularly significant for children in those families loyal to those brands with high levels. Unfortunately, FDAs study does not identify the brand of food tested.. What might explain the increase in perchlorate contamination?. The only action we can document is FDAs decision in 2005 to allow as much as 12,000 parts per million (ppm) of perchlorate to be added as an anti-static agent to plastic packaging for dry food with no free fat or oil. The packaging can be used for final products or raw materials before or during processing. Even if the final product is a liquid, raw materials such as rice, whey, sugar, starch, or spice may have contacted the perchlorate-laden plastic. The FDA decision was made in late in 2005 and sampling from the first study ended in 2006.. A Freedom of ...
Dairy cows act as biofilters for perchlorate Source of Article: http://www.ift.org. 11/03/2005-Dairy cows may metabolize over 80% of ingested perchlorate in their digestive system, reducing the amount of this chemical that can be transferred to milk. Public concern about the environmental presence of perchlorate, a naturally occurring and industrially used compound, has increased in recent years. Perchlorate is potentially dangerous because it competes for iodine uptake in the thyroid gland and may subsequently reduce thyroid hormone levels, which are necessary for growth and development. Lactating mammary glands can also take up iodine, raising concerns that ingested perchlorate might be transferred to milk. Anthony Capuco and colleagues evaluated the effects of perchlorate on the health and milk of 16 dairy cows. The researchers infused perchlorate into the cows digestive tracts and found that while perchlorate levels increased slightly in the milk (and urine, feces, and blood) as its ...
HClO4 Perchloric acid is clear liquid that has no odor. Solutions below 73% at room temperature are strong non-oxidizing acids. Perchloric acid becomes a strong oxidizer when heated or at higher concentrations, at or above 73%. Organic, metallic and non-organic salts formed from oxidation are shock sensitive and pose a great fire and explosion hazard. There are many documented accidents resulting from perchloric acid. ...
Commonly encountered environmental chemicals might augment the effects of iodine deficiency by competing for transport by the sodium-iodide symporter (NIS). The NIS is an integral plasma membrane glycoprotein found in the thyroid gland and the lactating mammary gland, among other tissues. 12 The NIS mediates the active transport of iodide into the thyroid follicular cells, making it available to iodinate dehydroxylated tyrosine for the first step in thyroid hormone synthesis. In the mammary gland, the NIS mediates transport of iodide into milk, making it available to the infant. Although the NIS has a high affinity for iodide, other anions, such as thiocyanate, nitrate, and perchlorate, can compete with (and be transported as) iodide and thus decrease iodide concentration within the thyroid gland or milk. Although such transport might be expected to lead to increased concentrations of nitrate, thiocyanate, and perchlorate in human milk, only perchlorate exposure and excretion have been found to ...
Tom Neltner, J.D., is Chemicals Policy Director. All Americans who have been tested have perchlorate in their bodies. Perchlorate threatens fetal and child brain development by impairing the thyroids ability to transport iodine in the diet into the gland to make a thyroid hormone, known as T4, that is essential to brain development. Both the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) are scheduled to make decisions in 2017 that could significantly reduce exposure to this hazardous chemical.. Based on statements in a new report by EPA, we estimate that at least 20% of pregnant women are already iodine deficient, resulting in T4 levels that put the fetuses developing brains at risk. For this population of pregnant women, any perchlorate exposure results in an even greater risk of impaired brain development in their children and potentially a lifetime of behavioral and learning difficulties.. This is why it is critical that our public health agencies take ...
Establishment of a cleanup standard for perchlorate is of concern. Cleanup standards have been proposed in several states, ranging from 1 part per billion (ppb) to 18 ppb. Perchlorate interferes with iodide uptake into the thyroid gland. Because iodide is an essential component of thyroid hormones, perchlorate disrupts how the thyroid functions. In adults and children, the thyroid helps to regulate metabolism. In children, the thyroid also plays a major role in proper development. The impairment of thyroid function in expectant mothers may impact the fetus and newborn and result in effects such as behavioral changes, delayed development, and decreased learning capability. Changes in thyroid hormone levels may also result in thyroid gland tumors. ...
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Find quality suppliers and manufacturers of 19985-80-9(Cyclopropenylium, tris(1,1-dimethylethyl)-, perchlorate) for price inquiry. where to buy 19985-80-9(Cyclopropenylium, tris(1,1-dimethylethyl)-, perchlorate).Also offer free database of 19985-80-9(Cyclopropenylium, tris(1,1-dimethylethyl)-, perchlorate) including MSDS sheet(poisoning, toxicity, hazards and safety),chemical properties,Formula, density and structure, solution etc.
13C and 1H NMR characterization of the sodium perchlorafe complex of a new tetraoxatetraaza lipophilic cage ligand (1) derived from 1,7-dioxa-4,10-diazacyclododecane has been performed. 1H homonuclear correlated and 1H J-resolved two-dimensional experiments allowed the recognition of resonances due to different types of OCH2CH2N fragments, and of those of the hydrogens of the bridging chains. 13C resonances have been assigned on the basis of a 13C1H heteronuclear correlated two-dimensional experiment, together with the 13C NMR spectra of the synthetic precursors of 1. 13C spin-lattice relaxation times and NOE measurements established that the unique relaxation mechanism is dipole-dipole; the calculated rotational correlation times indicated that molecular reorientation is isotropic. 13C spectra and relaxation times obtained in different solvents showed that specific solute-solvent interactions are absent.. ...
The wet ashing of organic matter employing hot concentrated perchloric acid by G. Frederick Smith; 1 edition; First published in 1954; Subjects: Analytic Chemistry, Chemical tests and reagents, Chemistry, Analytic, Perchloric acid
Simple treatment of [FeIII(oep)Cl] (where oep is octaethylporphyrin) with dilute perchloric acid leads to facile preparation of the title compound, [Fe(C36H44N4)(CH4O)2](ClO4).2CH4O. The structure consists of discrete [Fe(oep)(HOCH3)2]+ cations, perchlorate anions and methanol molecules of solvation, which are connected by hydrogen bonds in an infinite network. The Fe atom is located in the plane of the N atoms and is coordinated by two methanol O atoms in the axial position, with an average Fe-N distance of 2.026 (3) ? and Fe-O bond lengths of 2.159 (3 ...
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A method of thermally disposing a binder containing explosive that reduces the possibility of an unplanned detonation and also allows for the control of pollution. It is particularly adapted for solid rocket propellants. The method comprises cooling a binder containing explosive to a temperature below the Tg range of the binder, reducing the cooled explosive to a smaller size and burning the resultant explosive. Another aspect of this invention is directed to a method for reclaiming ammonium perchlorate from an explosive comprising ammonium perchlorate and a binder that reduces the possibility of an unplanned detonation. It is particularly adapted for solid rocket propellants. The method comprises cooling the explosive to a temperature below the Tg range of the binder, reducing the cooled explosive to a smaller size and chemically extracting the ammonium perchlorate.
In the present study, nickel and iron (Ni/Fe) bimetallic nanoparticles (Ni-Fe NPs) were produced in the presence of activated carbon (AC) to prepare supported Ni/Fe bimetallic nanoparticles (Ni-Fe NPs/AC). The NPs were modified using cetylpyridinium chloride and used for the simultaneous adsorption and degradation of perchlorate. Synthesized Ni-Fe NPs/AC was characterized using FE-SEM, EDS, and XRD. The influential factors in the removal of perchlorate by Ni-Fe NPs/AC were optimized based on experimental design. According to the results, adsorption and degradation efficiencies were 96.98% and 78.81%, respectively, which could be achieved to the efficiency of nearly 100% by increasing the process time to 110 minutes. Reaction kinetics complied with the pseudo-first-order characteristics. Moreover, the rate constant of adsorption and degradation were estimated at 0.0848 and 0.0199 min-1 at 303 K, and the activation energy for adsorption and degradation was 42.39 and 12.47 kJ/mol, respectively. The
The General Accounting Office (GAO) reports (.pdf ~2.2 MB) that the Pentagon has refused some state and federal requests to test sites for toxic perchlorate contamination. The Pentagon called the report "factually incorrect and fundamentally flawed.". The GAO study called the contamination a result of Department of Defense activites. Perchlorate, an ingredient in rocket fuel and other military products, has been found to interfere with thyroid function and is especially dangerous to infants. It is found in drinking water in many states.. GAO investigators detected perchlorate in 35 states at 395 sites, over half of them in California and Texas. Pentagon policy requires testing only when the Pentagon itself finds a reasonable likelihood of human exposure.. The GAO said a standardized reporting system is needed to monitor perchlorate detections and cleanup. The Pentagon and the EPA have called a formal reporting system unnecessary.. The Pentagon is being sued nationwide by communities fighting to ...
Thanks, I dont think the link is correct, it shows calcium in green and has it way off to the left of the ClO4s. It should be between them with the Ca+2 linked to the two Os of the ClO4S that are not double bonded to the Cl. I also think the bond sizes are wrong as they have the Ca+2 bond to the left of the ClO4 as being way, way toooo long. Ug ...
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The white smoke, used to announce the election of a new pope, combines potassium chlorate, milk sugar (which serves as an easily ignitable fuel) and pine rosin, Vatican officials said in a statement. The black smoke, which was used Tuesday evening to signal that no one in the first round of balloting received the necessary two-thirds vote of the 115 cardinals, uses potassium perchlorate and anthracene (a component of coal tar), with sulfur as the fuel. Potassium chlorate and perchlorate are related compounds, but perchlorate is preferred in some formulations because it is more stable and safer.. The chemicals are electrically ignited in a special stove first used for the conclave of 2005, the statement said. The stove sits in the Sistine Chapel next to an older stove in which the ballots are burned; the colored smoke and the smoke from the ballots mix and travel up a long copper flue to the chapel roof, where the smoke is visible from St. Peters Square.. ...
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This study, which was sensitive enough to detect the effects of age and gender on neonatal blood TSH levels, detected no effect from environmental exposures to perchlorate.
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A method for removing perchlorate or other anionic contaminates from ground water which comprises the step of passing the ground water over activated carbon, wherein the activated carbon has been either preloaded with an organic cation functional group or organic cation polymer or cationic monomer, or tailored with ammonium or other reduced nitrogen-containing compound.
Page contains details about rhodamine B octadecyl ester perchlorate/poly(vinyl sulfonic acid)/bovine serum albumin nanoparticles . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Read chapter Appendix A Biographic Information on the Committee to Assess the Health Implications of Perchlorate Ingestion: Perchlorate-a powerful oxida...
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Article Emulsified-Oil Biobarrier Provides Long-Term Treatment of Perchlorate/VOC Plume. Security Technology Certification Program (ESTCP) evaluation of a PRB containing emulsified oil substrate (EOS®). The pilot study was initiated in 2003 at the Al...
Tris-(2,2-bipyridine)ruthenium(ii)perchlorate/ACM15635957 can be provided in Alfa Chemistry. We are dedicated to provide our customers the best products and services.
G. Ezznaydy, A. Shaban, J. Telegdi, B. Ouaki, S. El Hajjaji: Inhibition of copper corrosion in saline solution by mono-hydroxamic acid. Journal of Materials and Environmental Science 06/2015; 6(7):1819-1823.. Jelena NakomÄ ić, Gyöngyi Vastag, Abdul Shaban, Lajos Nyikos: Effect of Thiazole Derivatives on Copper Corrosion in Acidic Sulphate Solution. International journal of electrochemical science 05/2015; 10(7):5365-5381.. T. RigoÌ , A. MikoÌ , J. Telegdi, M. Lakatos-VarsaÌ nyi, A. Shaban, E. KaÌ lmaÌ n: Inhibition Effect of Hydroxamic and Phosphonic Acids Langmuir-Blodgett Films on Iron Corrosion in Sodium Perchlorate Solution. Electrochemical and Solid-State Letters 08/2005; 8(10):B51-B54.. I. Lukovits, A. Shaban, E. Kálmán: Thiosemicarbazides and thiosemicarbazones: Non-linear quantitative structure-efficiency model of corrosion inhibition. Electrochimica Acta 07/2005; 50(20):4128-4133. DOI:10.1016/j.electacta.2005.01.029. E. SzÅcs, Gy. Vastag, A. Shaban, E. Kálmán: ...
Perchloric acid almost makes my list by itself, although technically I cant quite include it, since Ive already used it. I used the commercial grade, which is 70% strength in water, and its pretty nasty stuff. Itll chew through your lab coat and give you burns youll regret, as youd expect from something thats
This is a repost of a Fourth of July feature on portland indymedia from last year.] Thinking about going down to the River to watch the fireworks tonight? Think again. Turns out those beautiful showers of colorful sparks can be carrying any of the following chemicals: potassium nitrate, barium chlorate, arsenic, strontium nitrate, potassium perchlorate, copper oxide, sodium bicarbonate, carbon, sulphur, perchlorate, aluminium powder. Exposure to these chemicals can cause hemolysis (the destruction of red blood cells), acute renal failure, vomiting, abdominal pain, bloody diarrhoea, shallow breathing, convulsions, coma and death from respiratory or cardiac failure, benign pneumoconiosis (a lung disease caused by inhaling dust), muscular paralysis, arterial hypertension and profound hypokalaemia, and corrosion of the skin and other tissues from topical contact and acute pulmonary oedema or chronic obstructive lung disease. As if all that werent enough, dioxins, which are known cancer-causing ...
P210-P233-P234-P235-P240-P241-P242-P243-P260-P264b-P271-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P363-P370+P378q-P390-P501c. H226-H290-H314-H335. DOTInformation : DOT Class: 8; Packing Group: II. EINECSNumber : 231-512-4. TSCA : Yes. Recommended Storage : Ambient temperatures. ...
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HClO4 is the chemical formula for perchloric acid. This particular acid is classified as a strong acid because of its ionizing properties in water. Â Strong
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