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Topic: Diethyl ether hydroperoxide

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Diethyl ether

Peroxide

Tetrahydrofuran

Furan

Chemical reaction

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	Diethyl ether peroxide - Wikipedia, the free encyclopedia
		Diethyl ether peroxides are a class of organic peroxides that slowly form in diethyl ether upon storage under air, light, or in the presence of metal by autoxidation.
		Diethyl ether hydroperoxide (CH) is a colorless liquid of low viscosity with a pleasant smell.
		Diethyl ether hydroperoxide decomposes in the presence of sodium hydroxide and Fe
	en.wikipedia.org /wiki/Diethyl_ether_peroxide (297 words)

	ether
		Ether is the trivial name for the compound diethyl ether, CH ; the systematic (IUPAC) name of the compound is ethoxyethane.
		In more general chemical terminology, an ether is a functional group consisting of an oxygen atom bonded to two carbon atoms that are not bonded.
		An example of an ether in this sense is methoxymethane (or dimethyl ether), which has the formula CH Note that if either carbon bonded to the oxygen bridge is also double-bonded to another oxygen atom (eg CH) then the compound is an ester, not an ether.
	en.mcfly.org /ether (537 words)

	Organic peroxide - Wikipedia, the free encyclopedia
		Cumene hydroperoxide is an intermediate in the cumene process of industrial synthesis of phenol.
		In addition, many liquid ethers in the presence of air, light, and metal slowly (over a period of months) form ether hydroperoxides and peroxides (e.g.
		The ease with which diethyl ether, tetrahydrofuran or ethylene glycol dimethyl ether form explosive peroxides is the reason why they tend to be avoided in industrial processes.
	en.wikipedia.org /wiki/Organic_peroxide (1006 words)

	Diethyl Phthalate -- Recommendations and Resources (Site not responding. Last check: 2007-11-01)
		Diethyl ether, also known as ether and ethoxyethane, is a clear, colorless, and highly flammable liquid with a low boiling point and a typical smell.
		Diethyl ether has the formula CH It is used as a common solvent and has been used as a general anaesthetic.
		Diethyl ether has a high cetane number of 85 - 96 and is used as a starting fluid for diesel and gasoline engines.
	www.becomingapediatrician.com /health/42/diethyl-phthalate.html (745 words)

	Unsaturated curable poly(alkylene)ether polyol-based resins having improved properties - Patent 4309526
		Accordingly, in a preferred embodiment, a "flexible" polymeric methylene ether diol segment of relatively low molecular weight is reacted with a molar excess of a "rigid" diisocyanate such as toluene diisocyanate or methylene diisocyanate (4,4'-diisocyanato diphenylmethane), thereby forming urethane linkages.
		The polyisocyanate thus formed is reacted with a polymeric alkylene ether compound having at each end of the chain a functional group containing a reactive hydrogen atom, preferably in a hydroxyl group.
		In a preferred embodiment, the flexible poly(alkylene) ether having functional groups containing an active hydrogen is reacted with the polyisocyanate in such proportion that the polyisocyanate is present in molar excess as to the concentration of the active hydrogen-containing groups.
	www.freepatentsonline.com /4309526.html (5168 words)

	Ethers Epoxides and Thioethers - Chemistry Professor - Organic, Inorganic, High School, College, Chemistry Tutor - ...
		In this section on physical properties, the ability of these ethers to form complexes as with the grignard, is used to explain their widespread use as solvents.
		Reactions of ethers presents the expected acid cleavage, cleavage of rings in water and alcohols, ring opening reactions as a version of acid cleavage, reactions with the grignard, and the all important section on reaction with oxygen.
		The dangers of ethers are often thought to lie in their flammability, and that characteristic is certainly evident.
	chemistryprofessor.com /Ethers_Epoxides_and_Thioethers.htm (546 words)

	Media Portfolio
		The mass spectrum of diethyl ether shows major peaks for the molecular ion, loss of an ethyl group, a cleavage, and a cleavage combined with the loss of a molecule of ethylene.
		Ethers react with concentrated HBr and HI because these reagents are sufficiently acidic to protonate the ether, while the bromide and iodide are good nucleophiles for the substitution.
		When ethers are stored in the presence of atmospheric oxygen, they slowly oxidize to produce hydroperoxides and dialkyl peroxides, both of which are explosive.
	wps.prenhall.com /wps/media/objects/340/348272/wade_ch14.html (1426 words)

	Hydroxylation of olefins - Patent 4314088
		Preferred is acetonitrile, dioxane, acetone, carbon tetrachloride, dimethyl formamide, tetrahydrofuran, diethyl ether, primary alcohols such as methanol, ethanol, and isobutanol and tertiary alcohols such as tertiary butanol.
		Although any organic hydroperoxide of the formula ROOH where R is a substituted or unsubstituted alkyl, cycloalkyl, aralkyl, azacyclic, or oxacyclic or 3 to 20 carbons would be operable, the preferred organic hydroperoxides are stable, most preferred are ethyl benzene hydroperoxide, tertiary butyl hydroperoxide and cumene hydroperoxide.
		Generally, molar ratios of olefin compounds in the substrates to hydroperoxide broadly in the range of 0.5:1 to 100:1, desirably 1:1 to 20:1 and preferably 2:1 to 10:1, are employed.
	www.freepatentsonline.com /4314088.html (2200 words)

	HEADING2909
		(A) Ethers may be considered as alcohols or phenols in which the hydrogen atom of the hydroxyl group is replaced by a hydrocarbon radical (alkyl or aryl).
		The first ether in the acyclic series is gaseous, but others are volatile liquids with a characteristic odour of ether; the higher members are liquids or sometimes solids.
		This heading also covers the halogenated, sulphonated, nitrated or nitrosated derivatives of ethers, ether-alcohols, ether-phenols, ether-alcohol-phenols, alcohol peroxides, ether peroxides or ketone peroxides, and compound derivatives (for example, nitrosulphonated, sulphohalogenated, nitrohalogenated and nitrosulphohalogenated derivatives).
	www.dncustoms.gov.vn /web_Eglish/BIEU_THUE/E_HTM/E2909.HTM (603 words)

	Hidden stereospecificity in the biosynthesis of divinyl ether fatty acids -- Hamberg 272 (3): 736 -- FEBS Journal (Site not responding. Last check: 2007-11-01)
		divinyl ether synthases in tomato and potato and in the identification
		Grechkin AN, Fazliev FN and Mukhtarova LS (1995) The lipoxygenase pathway in garlic (Allium sativum L.) bulbs: detection of the novel divinyl ether oxylipins.
		Grechkin AN and Hamberg M (2004) The ‘heterolytic hydroperoxide lyase’ is an isomerase producing a short-lived hemiacetal.
	content.febsjournal.org /cgi/content/full/272/3/736 (2962 words)

	Polymers containing carboxyl groups and polyalkylene ether side- chains as additives in mineral building materials - ...
		The use of crosslinked polymers of ethylenically unsaturated polyoxialkylene ethers, multiply unsaturated alkenylethers and maleic anhydride as fluidizers for cement-containing compositions is described in EP 619 277.
		For the polymerization in a nonaqueous medium, preference is given to using initiators such as dibenzoyl peroxide, dicyclohexyl peroxydicarbonate, dilauryl peroxide, methyl ethyl ketone peroxide, acetylacetone peroxide, tert-butyl hydroperoxide, cumene hydroperoxide, tert-butyl perneodecanoate, tert-amyl perpivalate, tert-butyl perpivalate, tert-butyl perneohexanoate, tert-butyl per-2-ethylhexanoate, tert-butyl perbenzoate, azobisisobutyronitrile, 2,2'-azobis(N,N'-dimethyleneisobutyramidine) dihydrochloride, 4,4'-azobis(4-cyanovaleric acid).
		divinyl adipate, butanediol divinyl ether, trimethylolpropane trivinyl ether; allyl esters of ethylenically unsaturated carboxylic acids, e.g.
	www.freepatentsonline.com /6384111.html (9786 words)

	Third Level
		Many ethers tend to absorb and react with oxygen from the air to form unstable peroxides which may detonate with extreme violence when they become concentrated by evaporation or distillation.
		Ethers should be stored in amber bottles or other opaque containers and under a blanket of inert gas, such as nitrogen or argon, or over a reducing agent to inhibit formation of peroxides.
		Containers of ether and other peroxide forming chemicals should be marked with the date they are opened and with the date of required disposal.
	www.ehs.berkeley.edu /pubs/guidelines/pecguidelines.html (3525 words)

	PS10
		The discovery of the crown ethers by Charles Pedersen of DuPont earned him a share in the 1987 Nobel Prize in Chemistry.
		Diethyl ether has a propensity to form hydroperoxides and peroxides (pg.
		c) When the hydroperoxide of diethyl ether is treated with dimethyl sulfide, dimethyl sulfoxide, ethanol and acetaldehyde are formed.
	classes.yale.edu /02-03/chem220a/probsets/PS01/PS10.html (435 words)

	Ether (Site not responding. Last check: 2007-11-01)
		The name ether was given to the substance in 1730 by W. Frobenius.
		Despite their comparably attenuated reactivity, ethers can act as Gilbert N. LewisLewis bases (see Acid-base reaction theories).
		Like Ether, Qunu can expose consultants and service providers to their potential customers.
	www.33beat.com /Ether.html (725 words)

	Tetrahydrofuran THF - The Explosives and Weapons Forum (Site not responding. Last check: 2007-11-01)
		Bear in mind that the peroxides of ethers are not attached to the ether oxygen.
		The formation of ether peroxides is a radical mechanism where an O2 radical.O-O. attacks the C next the O in the ether R-O-(CH2)-R, forming an ether radical R-O-(.CH)-R and a hydroperoxide radical
		Your etherhydroperoxide radical with the C-O-O. combines with an ether radical R-O-(.CH)-R, so in the end you get 2 ether molecules, where the C next to the O is connected with an -O-O- peroxide bridge.
	roguesci.org /theforum/.../1885-tetrahydrofuran-thf.html (2395 words)

	FDA > CDRH > CFR Title 21 Database Search
		Polyoxypropylene (20 moles) butyl ether Polyoxypropylene (40 moles) butyl ether Polyoxypropylene (20 moles) oleate butyl ether.
		Sulfosuccinic acid 4-ester with polyethylene glycol dodecyl ether disodium salt (alcohol moiety produced by condensation of 1 mole of n-dodecyl alcohol and an average of 5-6 moles of ethylene oxide, Chemical Abstracts Service Registry No. 039354-45-5).
		Sulfosuccinic acid 4-ester with polyethylene glycol nonylphenyl ether, disodium salt (alcohol moiety produced by condensation of 1 mole of nonylphenol and an average of 9-10 moles of ethylene oxide) (CAS Reg.
	www.accessdata.fda.gov /scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=175&showFR=1&subpartNode=21:3.0.1.1.6.2 (4888 words)

	Accumulation and metabolism of low density lipoprotein-derived cholesteryl linoleate hydroperoxide and hydroxide by ...
		Hydroperoxides are reactive intermediates in the chain reaction
		Thomas, J. P., Girotti, A. Reactivity of photochemically generated lipid hydroperoxides in cell membranes with glutathione peroxidase.
		Hoppe, G., O'Neil, J., Hoff, H. Inactivation of lysosomal proteases by oxidized LDL is partially responsible for its poor degradation by mouse peritoneal macrophages.
	www.jlr.org /cgi/content/full/39/12/2394 (7096 words)

	Peroxide (Site not responding. Last check: 2007-11-01)
		Since peroxides can form spontaneously in some materials, great care must be taken with such "peroxide forming materials".
		In addition, many liquid ethers in the presence of air and light slowly (over a period of months) form ether peroxides (e.g.
		Consequently it is recommended that containers of ether opened more than a year previously, should be disposed of as hazardous waste.
	www.free-download-soft.com /info/peroxide.html (410 words)

	Divinyl Ether Fatty Acid Synthesis in Late Blight—Diseased Potato Leaves -- Weber et al. 11 (3): 485 -- THE PLANT CELL
		Divinyl ether fatty acid accumulation in cultivar Matilda, a cultivar with increased resistance to P.
		of the divinyl ether was by reversed-phase HPLC on a Whatman
		Galliard, T., Wardale, D.A., and Matthew, J.A. (1974) The enzymic and non-enzymic degradation of colneleic acid, an unsaturated fatty acid ether intermediate in the lipoxygenase pathway of linoleic acid oxidation in potato (Solanum tuberosum) tubers.
	www.plantcell.org /cgi/content/full/11/3/485 (4737 words)

	The MSDS HyperGlossary: Peroxide
		Peroxides and hydroperoxides are highly reactive materials and may be extremely shock-sensitive explosives.
		The presence of peroxides is indicated by a blue color in the ether layer.
		In the case of diisopropyl ether, the free radical abstracts a hydrogen atom from a carbon next to the ether oxygen atom.
	www.ilpi.com /msds/ref/peroxide.html (2125 words)

	Evidence for the Formation of Dinor Isoprostanes E1 from alpha -Linolenic Acid in Plants -- Parchmann and Mueller 273 ...
		O atoms was obtained by eluting the column with 500 ml of diethyl
		Measurement of Conjugated Diene and Hydroperoxide Formation-- Fatty acid peroxidation was assessed by two different approaches.
		Hydroperoxides were determined by the ferrous oxidation-xylenol orange assay as described (17).
	www.jbc.org /cgi/content/full/273/49/32650 (3689 words)

	RNA synthesis using a universal, base-stable allyl linker -- Zhang et al. 25 (20): 3980 -- Nucleic Acids Research
		The filtrate was concentrated, and the residue purified by chromatography on silica gel using a gradient of 2% pyridine in petroleum ether to 2% pyridine, 2% methanol and 20% ethyl acetate in petroleum ether to give 3.46 g (6.7 mmol, 96%) of 6 as a viscous liquid.
		The aqueous layer was then extracted with a 150 ml portion of a 1:1 mixture of ethyl ether and ethyl acetate.
		After 16 h at room temperature the mixture was filtered, concentrated and the product purified by chromatography on silica gel using a gradient of 2% pyridine in petroleum ether to 2% pyridine, 2% methanol and 30% ethyl acetate in petroleum ether.
	nar.oxfordjournals.org /cgi/content/full/25/20/3980 (3218 words)

	Characterization of Glutathione Amide Reductase from Chromatium gracile. IDENTIFICATION OF A NOVEL THIOL PEROXIDASE ...
		The reaction was started with the addition of the hydroperoxide.
		The reconstitution order was: NADH and GASH, or NADPH and GSH (A), GAR or GR (B), Prx/Grx (C), and the hydroperoxide (D).
		hydroperoxide metabolism is catalyzed by a single enzymatic entity
	www.jbc.org /cgi/content/full/276/24/20890 (5107 words)

	Table 1 to Subpart F of Part 63 -- Synthetic Organic Chemical Manufacturing Industry Chemicals
		112481 V Ethylene glycol diethyl ether 629141 I (1,2-diethoxyethane).
		542596 V Ethylene glycol monobutyl ether 112072 I acetate.
		112254 V Ethylene glycol monomethyl ether acetate 110496 I Ethylene glycol monomethyl ether........
	www.setonresourcecenter.com /40CFR/Docs/wcd0005b/wcd05b20.asp (211 words)

	shock sensitive chemicals
		Shock sensitive materials should be kept to a minimum by maintaining proper inventory consistent with the rate of use.
		Inventory is also important in order to dispose of chemicals which tend to form unstable materials with age, such as ethers, or materials which become dangerous when they become dehydrated, such as picric acids.
		Shock-sensitive materials should be stored in a cool, dry area, and protected from heat and shock.
	www.ecu.edu /oehs/hazwaste/shock.asp (203 words)

	Information on Hazardous Chemicals by Class
		Proprietary mixtures, i.e., cleaning, disinfecting, bleaching, degreasing solids or solutions based on these chemicals are corrosive to a degree dependent upon dilution.
		Many organic solvents, alcohols, ethers, ketones, esters, etc. are CNS depressants.
		Examples of known human carcinogens: 4-aminodiphenyl (skin), arsenic and certain compounds, asbestos, benzene, benzidine and related compounds (skin), beta- (or 2-) naphthylamine, bis- chloromethyl ether, chlornaphazine, chromium VI compounds, coal-tar pitch volatiles, diethylstilbestrol, melphalan, mustard gas, nickel sulfide roasting (fume and dust), 4-nitrodiphenyl (skin), soots/tars/non refined mineral oils, vinyl chloride.
	people.clarkson.edu /orgs/indhygie/manual/chemhyg.htm (2463 words)

	Air and Water Purifier Conditioner, blog
		Group 2 reagents or Group 2 substrates, referred herein are compounds and polymers that contain an active methylene group which is adjacent to at least one electron withdrawing group such as ester, ether, carbonyl, nitrile, amide, nitro, sulfoxy, carbamyl, hydroxyl, or an aromatic ring groups.
		The Group 2 reagents or substrates most susceptible to such reactions contain active methylene or methyne group, which is adjacent to at least one strong electron withdrawing group such as the oxygen of hydroxyl, ester, ether, sulfoxy, cyano, carbonyl carbamyl or an aromatic ring groups.
		Examples of the free radical initiator include organic and inorganic peroxides such as benzoyl peroxide, t-butyl peroxybenzoate, dicumyl peroxide, t-butyl hydroperoxide, t-butyl peroxyacetate, diisopropylperoxy dicarbonate, 2,2-bis(t-butylperoxy)octan- e, methyl ethyl ketone peroxide, potassium peroxide and hydrogen peroxide; and azo compounds such as.alpha.,.alpha.'-azobisisobutyronitrile.
	thethirdingredient.com (6089 words)

	6.0 Chemical Hazards
		This information provides a history of the chemicals in each container and guides future researchers as to potential quality of the chemicals stored in the laboratory.
		Providing container-opening dates is especially important for peroxide-forming chemicals such as ethers, dioxane, isopropanol, and tetrahydrofuran that could pose an explosion hazard.
		Most typical are ethyl ether, dioxane, isopropanol, and tetrahydrofuran.
	www.research.northwestern.edu /research/ors/labsafe/cbsl/cbsl6.htm (11154 words)

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