Liquid 4-methyl 2-hexanone

Acetone and the butenes together amount to more than 95 % of the products. According to Ausloos , the butene fraction consists of 7 % butene-1, 70 % trans-butene-2, and 23 % c/j-butene-2. The distribution of the isomers is independent of the wavelength (between 2360 and 3130 A) and the temperature (between —140 and 4-73 °C), and is not influenced by solvents. 

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Methyl-l-hexanone-3, C-HjjO, is found naturally in pennyroyal oil, and is obtained by the decomposition of pulegone. It is an aromatic liquid having the following characters —... 

Hexanone, also known as methyl n-butyl ketone or MBK, is a clear, colorless liquid with a somewhat sharp odor. The liquid form can easily evaporate into the air as a vapor. It is a waste product of wood pulping, coal gasification, and oil shale operations. 2-Hexanone was formerly used in paint and paint thinner and in various chemical substances. However, since it was found to have harmful health effects, it is no longer made in the United States, and its uses have been restricted. There are no known major natural sources of 2-hexanone in the environment. When 2-hexanone is released to rivers or lakes, it dissolves very easily, and it may evaporate into the air in a few days. We do not know if 2-hexanone binds to soil. When 2-hexanone is released to the water, air, or soil, it is probably broken down into smaller products, possibly within a few days. 

Methyl Isoamyl Ketone. Methyl isoamyl ketone [110-12-3] (5-methyl-2-hexanone) is a colorless liquid with a mild odor. It is produced by the condensation of acetone and isobutyraldehyde (164) in three steps which proceed via the keto-alcohol dehydration to 5-methyl-3-hexen-2-one, and hydrogenation to 5-methyl-2-hexanone. 

Among the products of the radiolysis of 2-pentanone and 2-hexanone, ethylene and propene were found in considerable amounts . The distribution of the butenes in the radiolysis of 4-methyl 2-hexanone (both in the vapour and in the liquid phase) was very much similar to that observed in fhe photolysis at short wavelengths . 

Beilstein Handbook Reference) BRN 0506163 EINECS 203-737-8 2-Hexanone, 5-methyl- HSDB 2885 Isoamyl methyl ketone Isopentyl methyl ketone Ketone, methyl isoamyl 2-Methyl-5-hexanone 5-Methyl-2-hexanone 5-Methylhexan-2-one Methyl isoamyl ketone Methyl isopentyl ketone MIAK UN2302. Liquid bp = 144 d = 0.888 hn = 176.188,192,196 nm (gas) slightly soluble in H2O. soluble in CCI4, very soluble in MezCO, CeHe, freely soluble in EtOH, Et20. 

Beilstein Handbook Reference) AI3-01229 BRN 0605399 Caswell No. 574AA CCRIS 2052 EINECS 203-550-1 ERA Pesticide Chemical Code 044105 FEMA Number 2731 Hexanone Hexon Hexone HSDB 148 Isobutyl methyl ketone Isobutyl-methylketon Isohexanone Isopropyl acetone Ketone, isobutyl methyl Methyl-2-pentanone Methyl-isobutyl-cetone Methyl isobutyl ketone [Flammable liquid] Methylisobutylketon 4-Methyl-2-pentanone 4-Metil-pentan-2-one Metilisobutilchetone Metyloizobutylo-keton MIBK MIK NSC,5712 2-Pentanone, 4-methyl- RCFtA waste number U161 Shell MIBK UN1245, Registered by EPA (cancelled). Colorless liquid bp = 117 -118 ... 

Methyl isoamyl ketone (5-methyl-2-hexanone) n. CH3COC2H4CH(CH3)2. A colorless liquid with a pleasant odor, used as a solvent for cellulose esters, acrylic resins, and certain vinyl polymers. It has a high solvent power and low evaporation rate, making it useful as a retarder solvent that promotes flow-out of coatings and reduces blushing. 

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