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Topic: Ethyl mercaptan

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Methyl mercaptan

Mercaptans

Natural gas

Aroma compound

Methane

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Sulfite

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Sulfate

Organic chemistry

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Thiol

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		Apex Terminal engages in the pipeline receipt and storage of liquefied propane, the storage of Ethyl Mercaptan, and the loading of propane tank trucks.
		The purpose of Ethyl Mercaptan is for odorizing the propane as it is loaded onto propane trucks.
		Based on the criteria in 40 CFR 68.10, the distance to the specified endpoint for the worst-case accidental release scenario for Ethyl Mercaptan is less than the distance to the nearest public receptor.
	www.rtknet.org /rmp/sum7/NC/fac100000165652 (557 words)

	[No title]
		ethyl mercaptan stink bomb!, mcminnville school distric, outlvba dll is not a valid office add.
		In general, the Task Force ethyl mercaptan stink bomb not result in recommendations regarding an intervention's use but is important for identifying areas ethyl mercaptan stink bomb uncertainty and continuing research needs.
		In contrast, adequate evidence of ethyl mercaptan stink bomb studies had to meet these criteria: a) they were ethyl mercaptan stink bomb in industrialized.
	hometown.aol.com /intopsite14/ethyl-mercaptan-stink-bomb.html (1113 words)

	Ethyl mercaptan - Education - Information - Educational Resources - Encyclopedia - Music
		Ethyl mercaptan is a colorless liquid that has a strong odor, resembling that of rotten eggs.
		Ethyl mercaptan is toxic and in large doses will cause headaches, nausea, and a lack of coordination, as well as liver and kidney damage.
		The doses of ethyl mercaptan from natural gas are not toxic.
	www.music.us /education/E/Ethyl-mercaptan.htm (325 words)

	NOAA's National Ocean Service Office of Response and Restoration \| Emergency Response \| Responding to Chemical Spills \| ...
		A container on the vessel deck appears to be slowly leaking ethyl mercaptan (ethanethiol), and crew members have observed that a small pool of liquid has formed on the deck next to that container.
		These results indicate that ethyl mercaptan's toxic vapors could be a serious concern for people close to or on the deck of the vessel.
		Outside, on the deck of the vessel, the vapor from the evaporating puddle mixes quickly with the air and the concentration of the ethyl mercaptan vapor in the air remains low.
	response.restoration.noaa.gov /topic_subtopic_entry.php?RECORD_KEY(entry_subtopic_topic)=entry_id,subtopic_id,topic_id&entry_id(entry_subtopic_topic)=669&subtopic_id(entry_subtopic_topic)=24&topic_id(entry_subtopic_topic)=1 (1795 words)

	FAQ Regarding Gas Odor
		Methyl mercaptan is a powerful odorant as is its cousin, ethyl mercaptan, which is found in the chemical substances found in a skunk's repellent.
		Methyl mercaptan is also generated in the decaying roots of Raphanus sativus.
		Mercaptans generated in the environment can be carried by rain or irrigation water through the soil.
	www.co.el-dorado.ca.us /EMD/solidwaste/faq_gas.html (352 words)

	Ethyl mercaptan (Site not responding. Last check: )
		Ethyl mercaptan is a colorless liquid that has a strong odor, resembling that of rotten eggs.
		Ethyl mercaptan is toxic and in large doses will cause headaches, nausea, and a lack of coordination, as well as liver and kidney damage.
		The doses of ethyl mercaptan from natural gas are not toxic.
	207.150.180.135 /Ethyl_mercaptan (118 words)

	ETHYL MERCAPTAN (ETHANE THIOL)
		Mercaptan: any of a class of organosulfur compounds is similar to the alcohol and phenol but containing a sulfur atom in place of the oxygen atom.
		Sulfur analog of alcohol is called thiol (or mercaptan), and ether analog is called sulfide.
		Isethionic acid, short chain alkan sulfonate containing hydroxy group, is a water soluble liquid used in the manufacture of mild, biodegradable and high foaming anionic surfactants which provides gentle cleansing and soft skin feel.
	www.chemicalland21.com /arokorhi/industrialchem/solalc/ETHYL%20MERCAPTAN.htm (1754 words)

	Zacon Limited
		Ethyl Mercaptan (Ethanethiol) a colorless organic liquid C2H5SH that has a strong odor and is added to odorless gas's for fuel as a warning agent.
		In mining we use it in the same manner, it is the only reliable way of alerting underground personnel as to a problem within the Mine.
		To be fired in a Fresh Air System to act as a mask or deodorizer of the Ethyl Mercaptan.
	www.zacon.ca /stench-gas.asp (248 words)

	Hancock Gas Service, Inc. (Site not responding. Last check: )
		Ethyl Mercaptan is the preferred warning agent in liquid propane applications.
		Ethyl Mercaptan was first chosen as a viable warning agent in a study by the U.S. Bureau of Mines in 1931 and later confirmed in independent studies by the U.S. Energy Research and Development Administration (ERDA) in 1977.
		Ethyl Mercaptan is normally used to stench propane because it is chemically stable when mixed with propane and has many of the same physical characteristics.
	www.hancockgas.com /msds.htm (1732 words)

	ETS Laboratories
		Under certain conditions, mercaptans may be oxidized to form mono and disulfides.
		Because of the lower sensory threshold of mercaptans, this conversion is often accompanied by an increase in objectionable odors.
		S is desirable to minimize and avoid the formation of mercaptans and other complex sulfides more resistant to treatment.
	www.etslabs.com /scripts/ets/pagetemplate/blank.asp?pageid=350 (826 words)

	mercaptan - OneLook Dictionary Search
		mercaptan : The American Heritage® Dictionary of the English Language [home, info]
		Mercaptan : Online Plain Text English Dictionary [home, info]
		The name is specifically applied to ethyl mercaptan, C2H5SH.
	www.onelook.com /?w=mercaptan&ls=a (241 words)

	Documentation for Immediately Dangerous to Life or Health Concentrations (IDLHs) - 75081
		Basis for revised IDLH: The revised IDLH for ethyl mercaptan is 500 ppm based on acute inhalation toxicity data in animals [Fairchild and Stokinger 1958].
		This may be a conservative value due to the lack of relevant acute toxicity data for workers.
		Acute toxicity of some aliphatic and aromatic thiols (mercaptans).
	www.cdc.gov /niosh/idlh/75081.html (145 words)

	Importer of Ethyl Mercaptan
		Importer of Ethyl Mercaptan with good quantity and good quality as per our specification.
		We are bimporting Ethyl Mercaptan with 98.5 % Minimum, 20 MT, Specific gravity at 20 degree C should be 0.835 to 0.840 Distillation Range (a) I B P Not below 330C (b) 95 % Recovery Not above 36.50C and many more so on.
		We are mainly looking for the Ethyl Mercaptan supplier which was supplying to our company as per our specification and requirements.
	www.tradepeak.com /leads6/Importer_of_Ethyl_Mercaptan_India_36878.htm (95 words)

	Independent Propane Company: Propane Safety (Site not responding. Last check: )
		Since propane is flammable, a product called Ethyl Mercaptan which has a revolting, almost nauseating stench, is added to propane to provide an alert that propane is present in the atmosphere.
		Be aware that with odorized product the intensity of ethyl mercaptan stench may fade due to chemical oxidation (in the presence of rust, air or moisture), adsorption or absorption.
		While ethyl mercaptan may not impart the warning of the presence of propane in every instance, it is generally effective in a majority of situations.
	www.ipropane.com /safety.htm (220 words)

	Propane Odor Fade
		A strong-smelling substance called ethyl mercaptan is added to propane to warn consumers of a leak.
		Ethyl mercaptan reacts with rust and metal surfaces inside steel tanks, causing the odorant to leech out of the gas.
		"Ethyl mercaptan is unreasonably dangerous and defective in the absence of a vapor detector," he said.
	www.brucegoldfarb.com /propane.htm (1193 words)

	ethyl acetate definition - Dictionary - MSN Encarta
		ethyl acetate definition - Dictionary - MSN Encarta
		Search for "ethyl acetate" in all of MSN Encarta
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	encarta.msn.com /dictionary_1861689879/ethyl_acetate.html (75 words)

	D1988-06 Standard Test Method for Mercaptans in Natural Gas Using Length-of-Stain Detector Tubes
		Available detector tubes provide a total measuring range of 0.5 to 160 ppm by volume of mercaptans, although the majority of applications will be on the lower end of this range (that is, under 20 ppm).
		Besides total mercaptans, detector tubes are also available for methyl mercaptan (0.5 to 100 ppm), ethyl mercaptan (0.5 to 120 ppm), and butyl mercaptan (0.5 to 30 mg/M³ or 0.1 to 8 ppm).
		It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
	www.astm.org /DATABASE.CART/REDLINE_PAGES/D1988.htm (309 words)

	Caustic Treating of MTBE and TAME Feedstocks
		Since sulphur is detrimental to the alkylation process, a caustic treating system is in place at most refineries to extract the easily extracted methyl and ethyl mercaptans present in the mixed olefinic LPG stream.
		Light mercaptans such as methyl, ethyl, propyl, are very easily sweetened whereas heavier mercaptans are not.
		This degassing step is required regardless of the mercaptan content of the untreated dehumanized catalytic cracked gasoline because even a minor amount of air injection at the sweetener will cause the TAME feed to be off-spec regarding oxygen content.
	www.merichem.com /products_services/refining_technology/product_literature/mtbe/index.php (1588 words)

	Sulfur in C5 Hydrogenation
		The top reflux shows only ethyl mercaptan (6.9 ppm), dimethyl sulfide (3.2 ppm), 2-propyl mercaptan (3.0 ppm), and 1-propyl mercaptan (0.4 ppm).
		We have identified sulfur compounds in the feed from ethyl mercaptan to benzothiophene.
		The bottom sample clearly shows what is left of the lighter sulfur compounds (ethyl mercaptan, dimethyl sulfide, 2-propyl mercaptan) and the concentration of heavies.
	www.paclp.com /industry/apps/701.htm (239 words)

	The dangers of propane tanks - Williams Bailey Law Firm (Site not responding. Last check: )
		Propane is an odorless gas; the "rotten eggs" smell most people associate with propane is actually provided by ethyl mercaptan, an additive which is mixed with propane gas to alert users of a leak.
		There have been several cases against propane gas grill manufacturers where consumers have been injured or killed while transporting propane tanks, or when operating gas grills in areas that were not properly ventilated, because of leaks they did not detect.
		The length of time varies, depending on such factors as the age and condition of the tank, but studies have shown that ethyl mercaptan can significantly dissipate within five to seven days after a propane tank has been filled and may become undetectable within just three weeks.
	williamsbailey.com /articles/propane-tanks.shtml (633 words)

	Wireless Estimator
		The colorless liquid is introduced into the pressurized line and a technician can easily identify the general area where the leak is coming from when the rotten egg smell from sulfur and skunk musk in the chemical is detected.
		Ethyl mercaptan can be purchased for approximately $25, but there is a considerable amount of paperwork required to obtain the federally regulated chemical that is now receiving added attention by the US Department of Homeland Security regarding non-manufacturing companies that are requesting to buy it.
		Exposure to too much ethyl mercaptan can cause serious respiratory effects to a climber, easily causing the technician to get headaches, lose coordination and possibly pass out from breathing the toxicant and fall from the structure.
	www.wirelessestimator.com /t_content.cfm?pagename=dehydrators (1903 words)

	The dangers of propane tanks - Williams Bailey Law Firm (Site not responding. Last check: )
		Propane is an odorless gas; the "rotten eggs" smell most people associate with propane is actually provided by ethyl mercaptan, an additive which is mixed with propane gas to alert users of a leak.
		There have been several cases against propane gas grill manufacturers where consumers have been injured or killed while transporting propane tanks, or when operating gas grills in areas that were not properly ventilated, because of leaks they did not detect.
		The length of time varies, depending on such factors as the age and condition of the tank, but studies have shown that ethyl mercaptan can significantly dissipate within five to seven days after a propane tank has been filled and may become undetectable within just three weeks.
	www.williamsbailey.com /articles/propane-tanks.shtml (633 words)

	Aquafeed.com - Providing News and Information to the Aquafeed Industry
		Located at 2810 Gulf States Road, ATOFINA’s Beaumont facility employs 89 people and currently manufactures methyl mercaptan, ethyl mercaptan and dimethyl sulfide, which are used in the manufacture of biodegradable herbicides and pesticides, as well as MMP.
		Ethyl mercaptan is primarily used as an odorizer for propane gas.
		The strong odor that ethyl mercaptan adds to propane makes leaks easy to detect, protecting homes and businesses.
	www.aquafeed.com /article.php?id=478§ionid=3 (610 words)

	Amazon.com: mercaptan's (Site not responding. Last check: )
		The esterification of acetic and propionic acids by methyl, ethyl, propyl, isobutyl and isoamyl mercaptans, by Edgar McCreary Faber (Unknown Binding - 1919)
		Elimination of ethyl mercaptan vapor-air explosions in stench warning systems (Report of investigations / United States Dept. of the Interior.
		Use of ethyl mercaptan to detect leaks in natural-gas distribution systems (Report of investigations / United States Department of the Interior, Bureau of Mines) by R. R Sayers (Unknown Binding - 1930)
	www.amazon.com /s?ie=UTF8&keywords=mercaptan's&tag=lexico&index=blended&link_code=qs&page=1 (386 words)

	D5305-97(2002) Standard Test Method for Determination of Ethyl Mercaptan in LP-Gas Vapor
		Although length-of-stain tubes are available to detect ethyl mercaptan concentrations in the range of 0.5 to 120 parts per million volume (ppmv), this test method is specifically applicable to systems containing 5 ppmv or more of ethyl mercaptan in LP-gas vapors.
		Note 1—A chromatographic technique can be used for more precise, quantitative determination of ethyl mercaptan in LP-gas.
		ethyl mercaptan; liquefied petroleum gases; odorant; stain tube; 75.160.30
	www.astm.org /DATABASE.CART/PAGES/D5305.htm (211 words)

	Propylene, Ethylene, Propylene, Ethylene, Pipeline, Natural Gas Calibration Standards
		PPM and PPB Hydrogen Sulfide, Carbonyl Sulfide and Methyl Mercaptan
		PPM and % Methane, Ethane, Ethylene, Propane, Propylene, 1,2-Butadiene, Ethyl Acetylene, Vinyl Acetylene, Cis-2 Butene, Trans-2-Butene, Isobutylene, 1-Butene and Vinyl Cyclohexene
		Miscellaneous (PPB and PPM Hydrogen Sulfide, Carbonyl Sulfide, Sulfur Dioxide, Methyl Mercaptan, Ethyl Mercaptan, Thiophene, Carbon Disulfide and Dimethyl Disulfide)
	www.mesagas.com /PetrochemicalRefinary.htm (215 words)

	Sulfur Sulphur Speciation (Site not responding. Last check: )
		Sulfur is present in crude oil as hydrogen sulfide (H2S), elemental sulfur and various sulfur compounds including a diverse range of mercaptans, sulfides, disulfides, refractory sulfur compounds, sterically hindered dibenzothiophenes, polycyclic aromatics, and thiophenes.
		Sweetening processes remove sulfur compounds or convert them to disulfides, as in the case of mercaptans.
		Analysis of sulfur compounds in crude oil, refinery process units and in final petroleum products is needed in order to avoid refining and regulatory problems associated with high sulfur content.
	www.itscb.com /newsitetest/news/sulphurspeciation.shtml (202 words)

	Atlanta Gas Explosion Injury Attorneys \| Propane Natural Gas Leaks Fires Carbon Monoxide Poisoning Lawyers (Site not responding. Last check: )
		However, what you actually smell is a substance called ethyl mercaptan.
		In order to give residents some warning of a gas leak, tank manufacturers add ethyl mercaptan to the gas, giving it a very distinct odor.
		One big problem with ethyl mercaptan is that when it comes into contact with air, rust, water or other substances, it loses its smell and no longer functions as a gas leak indicator.
	www.wtelaw.com /PracticeAreas/GasExplosionsFires.asp (1059 words)

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