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Topic: Methyl ethyl ketone

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Butanone

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	EPA - Air Toxics Website - Methyl Ethyl Ketone (2-Butanone)
		Methyl ethyl ketone is used as a solvent.
		The primary use of methyl ethyl ketone is as a solvent in processes involving gums, resins, cellulose acetate, and cellulose nitrate.
		Methyl ethyl ketone is a colorless volatile liquid that is soluble in water.
	www.epa.gov /ttn/atw/hlthef/methylet.html (1320 words)

	Methyl Ethyl Ketone - NSC (Site not responding. Last check: 2007-10-20)
		Methyl ethyl ketone is soluble in water, alcohol, ether, acetone, and benzene.
		Synonyms for methyl ethyl ketone are 2-butanone, ethyl methyl ketone, methyl acetone, and MEK.
		In 1998, 391,983,893 pounds of methyl ethyl ketone waste were managed; 71,993,122 pounds were recycled on-site; 20,967,510 pounds were recycled off-site; 79,994,354 pounds were used for energy recovery on-site; 74,985,166 pounds were used for energy recovery off-site; 82,796,267 pounds were treated on-site; 12,520,526 pounds were treated off-site; and 48,726,948 pounds were released on-and off-site.
	www.nsc.org /library/chemical/Methyl_E.htm (834 words)

	Nat' Academies Press, Spacecraft Maximum Allowable Concentrations for Selected Airborne Contaminants: Volume 2 (1996)
		MEK was not found to be genotoxic in the mouse lymphoma assay, unscheduled DNA synthesis assay, and micronucleus assay (O'Donoghue et al., 1988).
		MEK exposure at 3000 ppm for 7 h/d on gestation days 6-15 is slightly toxic to the fetus by delaying ossification in the rat and reducing fetal weight in the mouse (Deacon et al., 1981; Schwetz et al., 1991).
		Because MEK reduced the clearance of methyl n-butyl ketone, it is reasonable that an exposure of rats to 1125-ppm MEK and 225-ppm methyl n-butyl ketone, 24 h/d for 35 or 55 d resulted in more severe nerve injuries than an exposure to methyl n-butyl ketone alone at 225 ppm (Saida et al., 1976).
	www.nap.edu /books/0309054788/html/307.html (5303 words)

	Methyl ethyl ketone (EHC 143, 1992)
		The yield of MEK is 85 to 90% (Lowenheim & Moran, 1975).
		MEK was detected in expired air in measurable concentrations within 30 seconds after an application of MEK to the forearm, and a maximum concentration in expired air, averaging four times the plateau level for normal and dry skin, was achieved in 10-15 min.
		MEK and its metabolites are excreted by the lungs and kidneys.
	www.inchem.org /documents/ehc/ehc/ehc143.htm (13450 words)

	Air Toxics - Methyl ethyl ketone (Site not responding. Last check: 2007-10-20)
		Methyl ethyl ketone is a colourless liquid with a faint sweet odour.
		Common uses Methyl ethyl ketone is used as a solvent for lacquers, adhesives; for cleaning materials to be electroplated; for degreasing; in rubber and rubber cement, printing inks, paints, wood stains, varnishes and paint removers and in cleaning solutions; as a catalyst; and as a carrier.
		Because of its short life-expectancy in the atmosphere, methyl ethyl ketone is expected to be confined to the local area within which it is emitted.
	deh.gov.au /atmosphere/airquality/publications/sok/profiles/methyl.html (735 words)

	OSH Answers: Health Effects of Methyl Ethyl Ketone
		Animal studies have confirmed synergism between MEK and ethyl n-butyl ketone; methyl n-butyl ketone; n-hexane; carbon tetrachloride; 2,5- hexanedione and chloroform.
		MEK is metabolized in the liver, mainly to 3-hydroxy-2-butanone and 2,3-butanediol which are eliminated in urine.
		Most MEK probably enters the general metabolism in the body and is converted to acetate which is eventually broken down to carbon dioxide and water which are then eliminated in exhaled air and urine.
	www.ccohs.ca /oshanswers/chemicals/chem_profiles/mek/health_mek.html (1095 words)

	Butanone - Wikipedia, the free encyclopedia
		It is a ketone, also known as methyl ethyl ketone (MEK).
		It is used for synthesis of methyl ethyl ketone peroxide, a catalyst for some polymerization reactions.
		Methyl ethyl ketone is listed as a Table II precursor under the United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances[1].
	en.wikipedia.org /wiki/Methyl_ethyl_ketone (388 words)

	Methyl Ethyl Ketone, Urine
		Methyl ethyl ketone (MEK) at concentrations of 100 ppm may produce nose and throat irritation, followed by headaches.
		Methyl ethyl ketone is commercially employed as a solvent in paints, varnishes, paint removers and thinners, cleaning agents, and adhesives.
		Urine is the preferred specimen for assessing the extent of chronic MEK exposure, which is generally the case with occupational exposures.
	www.labcorp.com /datasets/labcorp/html/chapter/mono/bm001400.htm (207 words)

	METHYL ETHYL KETONE (Site not responding. Last check: 2007-10-20)
		Tests involving acute exposure of animals, such as the LD test in rabbits, has shown methyl ethyl ketone to have high acute toxicity from dermal exposure, while the LD test in rats and mice has shown the chemical to have moderate toxicity from ingestion.
		The RfD for methyl ethyl ketone is 0.6 mg/kg/d based on decreased fetal birth weight in rats.
		The odor threshold for methyl ethyl ketone is 5.4 ppm, with an acetone-like odor reported.
	www.klarify.com /methylet.html (1396 words)

	Methyl ethyl ketone (Site not responding. Last check: 2007-10-20)
		Synonyms: 2-Butanone; ethyl methyl ketone; MEK; Methyl acetone.
		inhalation chronic toxicity of methyl ethyl ketone and the RfC and oral.
		(Redirected from MEKP) Methyl ethyl ketone peroxide (MEKP) is an organic peroxide, a high explosive similar to acetone peroxide, and is quite dangerous to synthesize.
	realty.zalp.net /page-methyl-ethyl-ketone.html (139 words)

	Methyl Ethyl Ketone Monitoring Kits (Site not responding. Last check: 2007-10-20)
		EMT's Methyl Ethyl Keytone Monitoring Kits are designed to provide you with the ability to check exposure levels to Methyl Ethyl Keytone.
		OSHA Permissible exposure limit (PEL) for methyl ethyl ketone is
		NIOSH Recommended exposure limit (REL) for methyl ethyl ketone is 200 ppm TWA, 300 ppm STEL
	www.emt-online.com /ProductPages/KitsMethylEthylKetone.htm (442 words)

	Methyl Ethyl Ketone Peroxide (Site not responding. Last check: 2007-10-20)
		Place the MEK into a 100 ml beaker.
		When the both chemicals are at the proper temperature, add the MEK to the H2O2.
		Add the 5ml of H2SO4 slowly drop by drop to the solution of H2O2, and MEK (keeping the temp lower than 5 degrees Celsius).
	www.angelfire.com /anime4/blackdragon/MEKP.html (336 words)

	Methyl Ethyl Ketone, Blood
		Environmental exposure: none detected; occupational exposure: levels of 0.80-9.60 mg/L were found to be consistent with exposure to 3-60 ppm in air (the current recommended allowable threshold limit value (TLV®) is 200 ppm)
		Methyl ethyl ketone (MEK) exposure may cause eye, nose, and throat irritations, as well as headaches.
		Methyl ethyl ketone is used as a solvent in paints, varnishes, paint removers and thinners, cleaning agents, and adhesives.
	www.labcorp.com /datasets/labcorp/html/chapter/mono/bm001300.htm (150 words)

	ATSDR - Public Health Statement: 2-Butanone
		This Statement was prepared to give you information about 2-butanone (methyl ethyl ketone) and to emphasize the human health effects that may result from exposure to it.
		These factors include the dose (how much), the duration (how long), the route or pathway by which you are exposed (breathing, eating, drinking, or skin contact), the other chemicals to which you are exposed, and your individual characteristics such as age, sex, nutritional status, family traits, life style, and state of health.
		2-Butanone, also known as methyl ethyl ketone (MEK), is a colorless liquid with a sweet, but sharp odor.
	www.atsdr.cdc.gov /toxprofiles/phs29.html (1688 words)

	Methyl ethyl ketone Use
		Methyl ethyl ketone - Pesticide use statistics for 2003
		Note: See Working with the Information on this Page section below for important notes about this data.
		For detailed chemical information see the chemical detail page.
	www.pesticideinfo.org /Detail_ChemUse.jsp?Rec_Id=PC34945 (995 words)

	methyl ethyl ketone msds (Site not responding. Last check: 2007-10-20)
		KETONE IATA UN Class: 3 IATA Label: FLAMMABLE LIQUID AFI PSN Code: LNF AFI Prop.
		Shipping Name: ETHYL METHYL KETONE OR Safety (MSDS) data for methyl ethyl ketone peroxide
		Ketone Glossary Index Lachrymator MSDS Topics Free Sites FAQ's Regulations Glossary Software Suppliers.
	basekb.info /rp/msds/methyl-ethyl-ketone-msds (80 words)

	METHYL ETHYL KETONE
		When released into the soil, this material may leach into groundwater.
		----------------------------------------------- ----- --- ---- ----- Methyl Ethyl Ketone (78-93-3) Yes Yes No Yes --------\Federal, State & International Regulations - Part 1\---------------- -SARA 302- ------SARA 313------ Ingredient RQ TPQ List Chemical Catg.
		Poison Schedule: S5 This MSDS has been prepared according to the hazard criteria of the Controlled Products Regulations (CPR) and the MSDS contains all of the information required by the CPR.
	www.jtbaker.com /msds/englishhtml/m4628.htm (1317 words)

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