Methyl /-propyl ketone

Colorless liquid with a pleasant smell bp 140.5 C (244.9°F) freezes at -23 C (-9.4°F) density 0.972 at 25°C (77°F) solnble in alcohol, ether, acetone, and chloroform, moderately solnble in water (12.5 g/100 g water). 

Exposure to the vapors of acetyl acetone can cause irritation of the eyes, mncons membrane, and skin. In rabbits 4.76 mg produced severe eye irritation the effect on skin was mild. Other than these, the health hazards from this compound have not been reported. However, based on its stmcture and the fact that it has two reactive carbonyl gronps in the molecule, this compound shonld exhibit low to moderate toxicity at high concentrations, which should be greater than that of the C5-monoketones. 

GC-FID, GC/MS, and HPLC are the suitable instrumental techniques for acetyl acetone analysis. 

Methyl propyl ketone (MPK) is used as a solvent, in organic synthesis, and as a flavoring agent. 

Flammable liquid flash point (closed cup) 34°C (93 F) vapor density 3.45 (air = 1) Are-extinguishing agent alcohol foam a water spray may be used to flush and dilute the spill. It may form explosive mixtures with air LEL and UEL values are not reported. It may react violently with strong oxidizers. 

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Diethyl Ketone. Diethyl ketone [96-22-0] (3-pentanone) is isomeric with methyl / -propyl ketone (2-pentanone), which has similar solvent and physical properties. Diethyl ketone is produced by the decarboxylation of propionic acid over Mn02—alumina (165), Zr02 (166), or Zr02 or Th02 on Ti02 (167,168). Diethyl ketone can also be produced by the hydrocarbonylation of ethylene (169—171). It is used as a solvent and a reaction intermediate. 

Solvents used for dewaxing are naphtha, propane, sulfur dioxide, acetone—benzene, trichloroethylene, ethylenedichloride—benzene (Barisol), methyl ethyl ketone—benzene (benzol), methyl -butyl ketone, and methyl / -propyl ketone. Other solvents in commercial use for dewaxing include /V-methylpyrrolidinone, MEK—MIBK (methyl isobutyl ketone), dichloroethane—methylene dichloride, and propfyene—acetone. 

Acrylic acid A 34 Diphenyl A 63 Methyl propyl ketone B... 

Pentanone, see Methyl propyl ketone Pentyl acetate, see Amyl acetates... 

Methyl propyl ketone, see 2-Pentanone a-Methyl styrene CT... 

Corrective Action Application Case 1 - Groundwater at the MEMOREX Computer Tape Plant (Santa Clara, California) was contaminated by a leaking underground solvent storage tank (Skladany et al., 1987). Chemical analysis of the groundwater identified the presence of methyl ethyl ketone (MEK) up to 500 ppm xylenes together with ethyl benzene up to 40 ppm cyclohexanone up to 30 ppm cyclohexanol up to 10 ppm acetone up to 10 ppm and toluene, tetrahydrofuran, 2-butanol, and methyl propyl ketone each less than 1 ppm. A biological... 

Paulsen and Huck also used gas-phase chlorination of ammonia. The mixture, diluted with nitrogen, was led into excess liquid ketone. Diaziridines were obtained from methyl ethyl ketone, diethyl ketone, methyl propyl ketone, and methyl isopropyl ketone. The yields of the crude diaziridines, calculated on the chlorine, were over 90% (Table IV). 

Detectability may be a significant problem with homologous series of unsaturated compounds, particularly //-alkanes. For these compounds, refractive index detection or evaporative light-scattering, both of which are described elsewhere in the book, may be of use. Indirect photometry is a useful detection scheme for compounds that do not absorb in the UV. Acetone, methylethyl ketone, methyl propyl ketone, methyl isopropyl ketone, methyl isobutyl ketone, and acetophenone are added to an acetonitrile/water mobile phase, generating a negative vacancy peak when the nonchro-mophoric analyte emerges and a positive peak if the ketone is adsorbed and displaced.70 Dodecyl, tetradecyl, cetyl, and stearyl alcohols also have been derivatized with 2-(4-carboxyphenyl)-5,6-dimethylbenzimidazole and the derivatives separated on Zorbax ODS in a mobile phase of methanol and 2-propanol.71... 

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