1 edition of Quality of methyl tert-butyl ether (MTBE) data for ground-water samples collected during 1993-95 as part of the National Water-Quality Assessment Program. found in the catalog.
Quality of methyl tert-butyl ether (MTBE) data for ground-water samples collected during 1993-95 as part of the National Water-Quality Assessment Program.
1999 by U.S. Geological Survey, U.S. Dept. of the Interior in [Reston, Va.? .
Written in English
|Other titles||National Water-Quality Assessment (NAWQA) Program, national synthesis on volatile organic compounds (VOCs), Quality of methyl tert butyl ether (MTBE) data for ground-water samples collected during 1993-95 as part of the National Water-Quality Assessment Program.|
|Series||USGS fact sheet -- 101-99., Fact sheet (Geological Survey (U.S.)) -- FS-101-99.|
|Contributions||Geological Survey (U.S.)|
|The Physical Object|
|Pagination|| P. :|
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Methyl tert-butyl ether | C5H12O | CID - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities. Methyl tert-butyl ether (MTBE), also known as tert-butyl methyl ether, is an organic compound with a structural formula (CH 3) 3 COCH 3.
MTBE is a volatile, flammable, and colorless liquid that is sparingly soluble in water. It has a minty smell vaguely reminiscent of diethyl ether, leading to unpleasantChemical formula: C₅H₁₂O.
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. Methyl tert-butyl ether is also called MTBE and tert-butyl methyl ether.
(1,3) The chemical formula for methyl tert-butyl ether is C5H12O, and its molecular weight is g/mol. (1,4,5) Methyl tert-butyl ether occurs as a colorless liquid, with a vapor pressure of mm Hg at 25 °C. (1,4,5). Methyl tert-butyl ether (MTBE) is the main component of ether oxygenate; as such MTBE production all over the world is in a considerable volume.
The potential exposure of humans to MTBE should be monitored. This chapter describes the reproductive and developmental toxicity of MTBE in rodents, rabbits and aquatic organisms.
Apr 07, · Methyl tert-butyl ether (MTBE) was added to reformulated gasoline to boost octane and to reduce carbon monoxide exhaust emissions in high smog areas of the United States in thes. Because of concerns for groundwater contamination and water quality, MTBE was banned or its usage was limited in several states.
General description tert-Butyl methyl ether (MTBE) is a gasoline amstrad.fun undergoes oxidative degradation in the presence of propane-oxidizing bacterial strains. The kinetic studies of heat-assisted persulfate oxidation of MTBE under various parameters suggests that the reaction follows the pseudo-first-order kinetics.
Sigma-Aldrich offers a number of tert -Butyl methyl ether products. View information & documentation regarding tert -Butyl methyl ether, including CAS, MSDS & more.
METHYL tert-BUTYL ETHER: METHODIssue 2, dated 15 August - Page 3 of 4 c. Inject 24 µL of the µg/µL stock solution, 7 and 19 µL of the µg/µL solution, 7, 11, and 14 µL of the µg/µL stock solution onto the tubes near the glass wool plug and draw clean air through the tubes at L/min for 1 to 2 minutes.
Water quality and occurrence of methyl tert-butyl ether (MTBE) and other fuel-related compounds in lakes and ground water at lakeside communities in Sussex and Morris counties, New Jersey, tert-Butyl methyl ether Revision Date Jan T - Indicates a substance that is the subject of a Section 4 test rule under TSCA.
XU - Indicates a substance exempt from reporting under the Inventory Update Rule, i.e. Partial Quality of methyl tert-butyl ether book of the TSCA Inventory Data Base.
Methyl tert-Butyl Ether ALS Environmental may or may not test for Methyl tert-Butyl Ether (CAS # ). Information is subject to change; please contact.
Get this from a library. Quality of methyl tert-butyl ether (MTBE) data for ground-water samples collected during as part of the National Water-Quality Assessment Program. [Geological Survey (U.S.);]. nomination of Methyl-tert-Butyl Ether for listing in the 9th RoC.
The RG1 reviewed the available carcinogenicity data for the nomination of methyl tertiary-butyl ether (MtBE). After applying the current criteria for listing substances in the RoC, the RG1 passed a motion, by a vote of 4 Quality of methyl tert-butyl ether book favor to 3 opposed, to recommended that MtBE should be.
Butyl methyl ether / 2-Methylmethoxypropane / Methyl-tert-butyl-ether / Methyl tert-butylether / Tert-butyl-methyl ether / Methyl tertiary butyl ether Relevant identified uses of the substance or mixture and uses advised against Use of the substance/mixture: Octane booster for gasolines; manufacture of isobutene; extraction solvent, etc.
Quality Control. Specialty Chemicals, Metals & Materials Pure Elements, Metals & Materials tert-Butyl methyl ether, HPLC Grade, 99+% CAS Number. Synonyms Methyl tert-butyl ether. SDS Certificate of Analysis Product Specification. [Less] Methyl tert-butyl ether (MTBE) degradation technologies based on two-phase partitioning systems such [More] Methyl tert-butyl ether (MTBE) degradation technologies based on two-phase partitioning systems such as extractive membrane biofilm reactors (EMBFR) permit separation of biological and contaminant compartments, thus allowing optimization of the biological section.
Mar 03, · Methyl tert-butyl ether (MTBE) is a flammable liquid with a distinctive, disagreeable odor. It is made from blending chemicals such as isobutylene and methanol, and has been used since the s as an additive for unleaded gasolines to achieve more efficient burning.
MTBE is also used to dissolve gallstones. Patients treated in this way have MTBE delivered directly to their gall bladders. tert-Butyl methyl ether ≥% (by GC, corrected for water content), BAKER ANALYZED® HPLC for HPLC/UHPLC, for spectrophotometry, J.T. Baker® tert-Butyl methyl ether BAKER ANALYZED™ HPLC Reagent—High purity solvents for use in analytical and preparative separations.
Uses of methyl t-butyl ether. Methyl t-butyl ether, MTBE, is widely used as the oxygenated additive to improve the characeristics of petrol.
and its production grew over 20 years from almost zero to about 16 million tonnes a year in There has now been a dramatic.
Selected Bibliography of the Fuel Oxygenate Methyl Tert-Butyl Ether (MTBE) with Emphasis on Water Quality: Open-File Report [E.
Brachtl, United U.S. Department of the Interior, et al.] on amstrad.fun *FREE* shipping on qualifying offers. The United States Geological Survey (USGS) is a scientific organization created inand is part of the U.S.
amstrad.fun: E. Brachtl. PERSPECTIVES ON SPECIFIC SUBSTANCES: METHYL tert-BUTYL ETHER FIGURE Annual spill frequency of gasoline with MTBE (7–15%) – • It lowers the gasoline 50% ignition point, thus enhancing cold engine warmup perform- ance.
• Its relatively low taste and odor thresholds provide ample warning of its presence. • It has very low toxicity and does not bioaccumulate. CAS: MDL: MFCD EINECS: Synonyms: 2-Methoxymethylpropane, 2-Methylmethoxypropane, Ether, tert-butyl methyl, Methyl 1,1-dimethylethyl ether, Methyl t-butyl ether, Methyl tert-butyl ether, MTBE Suitable for spectrophotometry, HPLC, GC, and residue analysis.
UV cutoff nm. Certificate of Analysis on amstrad.fun (GC): % min. The biotransformation of methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME) was studied in humans and in rats after inhalation of 4 and 40 ppm of MTBE. [Less] Methyl tert-butyl ether (MTBE) and tert-butyl alcohol (TBA) are among the major soil contaminants that [More] Methyl tert-butyl ether (MTBE) and tert-butyl alcohol (TBA) are among the major soil contaminants that threaten the health of soil ecosystems.
Many MTBE-contaminated sites accumulate TBA, because TBA is the intermediate of. Biodegradation of Methyl Tert-Butyl Ether and Other Fuel Oxygenates by a New Strain, Mycobacterium austroafricanum IFP Exit Published in Applied Environmental Microbiology, this paper presents research results on the effect of a methylotrophic bacterium on the biodegradation of MTBE and other oxygenates.
methyl tert-butyl ether (MTBE) typically found in drinking water wells. September Methyl tert-butyl ether (MTBE) What is methyl tert-butyl ether. Methyl tert-butyl ether (MTBE) is a synthetic flammable liquid with a distinctive, disagreeable odor. Since the s, adding MTBE to unleaded gasoline has helped make it burn more efficiently.
Nov 07, · Methyl tert-butyl ether (also known as MTBE, tert-butyl methyl ether, tertiary butyl methyl ether and tBME) is an organic compound with structural formula (CH3)3COCH3. There will be scheduled maintenance work beginning on Wednesday 26th February from AM through to PM (GMT).
During this time, you may not be able to log into ChemSpider. We apologise for any inconvenience this might cause and thank you for your patience. The wide-scale use of methyl tertiary butyl ether (MTBE) in gasoline has resulted in substantial public controversy and action to ban or control its use due to perceived impacts on water quality.
Because oxygenates are still required under federal law, considerable research has focused on ethanol as a substitute for amstrad.fun by: BUTYL METHYL ETHER can act as a base to form salts or addition compounds with strong acids.
May react violently with strong oxidizing agents. Oxidizes readily in air. Relatively unreactive in other reactions, which typically involve the breaking of the carbon-oxygen bond.
Trends in methyl tert-butyl ether concentrations in private wells in southeast New Hampshire: to In southeast New Hampshire, where reformulated gasoline was used from the s tomethyl tert-butyl ether (MtBE) concentrations ≥ μg/L were found in water from % of domestic wells sampled in Evidence on Developmental and Reproductive Toxicity of Methyl Tertiary-Butyl Ether Public notices related to this chemical: Chemicals Proposed for Listing by the Labor Code Mechanism (Reproductive and Developmental Toxicants).
Methyl t-Butyl Ether (MTBE) Methyl t-Butyl Ether (MTBE) is a clear, colorless organic liquid compound. MTBE is widely used in global markets as a gasoline oxygenate.
High Purity MTBE is used as a solvent in the pharmaceutical industry and as a lab solvent. MTBE is also used as a chemical intermediate to produce high purity isobutylene. CAS number. Ethyl tertiary butyl ether (ETBE) and methyl tertiary butyl ether (MTBE): Status, review, and alternative use Article in ACS National Meeting Book of Abstracts 40(1) · March with 70 ReadsAuthor: Hossein Noureddini.
Ethers, such as METHYL TERT-BUTYL ETHER, can act as bases. They form salts with strong acids and addition complexes with Lewis acids. The complex between diethyl ether and boron trifluoride is an example.
Ethers may react violently with strong oxidizing agents. Mar 03, · Methyl tert-butyl ether (MTBE) is a flammable liquid which is used as an additive in unleaded gasoline. Drinking or breathing MTBE may cause nausea, nose and throat irritation, and nervous system effects.
MTBE has been found in at least 11 of the 1, National Priorities List sites identified by the Environmental Protection Agency (EPA). Methyl tertiary butyl ether (methyl tert-butyl ether, methyl t-butyl ether, or MTBE) is a chemical compound once commonly used in the United States as a fuel additive in gasoline.
It is an oxygenate, meaning it increases the oxygen content of the gasoline, and is also an octane rating enhancer in gasoline. Conversion of alcohols to ethers, i.e. ethanol into ethyl tert-butyl ether (ETBE) or tert-amyl ethyl ether (TAEE) and methanol into methyl tert-butyl ether (MTBE) or tert-amyl methyl ether (TAME), produces gasoline components with excellent fuel amstrad.fun the end-use point of view, ethers are preferred over alcohols as gasoline components.
Also known as: Methyl t-butyl ether, MTBE, Tert-butyl methyl ether, 2-methoxymethylpropane Chemical reference number (CAS): MTBE is a gasoline additive with a very strong odor. When chemicals like MTBE are added to gasoline, engines produce less carbon monoxide and other carbon-containing air pollutants by burning this "reformulated" gasoline.
MTBE is the common name for a synthetic chemical called methyl tert-butyl ether. It is a flammable liquid made from combinations of chemicals like isobutylene and methanol.
It has a distinctive odor that most people find disagreeable. It was first introduced as an additive for unleaded gasolines in the s to enhance octane ratings.VWR enables the advancement of science by providing high-quality chemicals and services, customized to your product or manufacturing needs.
We use operational excellence to deliver solutions that enable research, testing, production, and commercialization across the globe.tert-Butyl methyl ether (CAS NO) is almost exclusively used as a fuel component in motor gasoline. It has excited considerable interest because it is a good octane enhancer for gasoline (it blends as if it had a research octane number of to ).