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Molecular formula : C4H8O
MW : 72.10
CAS its dealer-93-3
nature : colorless flammable liquid, acetone odor. -85.9 ° C melting point, boiling point of 79.6 ° C, 30 ° C (15.9kPa), the relative density of 0.8054 (20 / 4 ° C), the refractive index of 1.3788, flash point (open cup) -6 ° C, 515 spontaneous combustion point. 6 ° C, heat capacity 2.297kJ / (kg ° C), viscosity (20 ° C) 0.41mPa s. Four will dissolve in water, but when the temperature increased solubility lower at 20 ° C, water solubility 26.8% (weight), water in 2-butanone solubility of 11.8% (weight). Soluble ethanol and ether, with the oil miscibility. With the formation of water azeotrope, the boiling point of 74.3 ° C, 88.7% - butanone. The air explosion limits of 1.97% -10.1% (volume).
Preparation : butanone dry distillation of wood is steamed solution (wood alcohol oil) the important components. From SIN industrial butanol, butane, etc. Preparation. 1. Sulfate legitimate indirect water containing alcohol mixed C4 fraction contact with sulfuric acid generated acid sulfate and Chinese sulfate, and then diluted with water, hydrolysis generation SIN butanol solution, and then dehydration, thick enough to mention SIN butanol. SIN butanol by pure nickel or zinc oxide catalytic dehydrogenation, in products. 2. Water is directly butene legitimate law at the two, a resin-catalyst, and the other to heteropoly acid as the catalyst. 3. SIN butanol dehydrogenation of this process-liquid and gas law, the majority of gas France dehydrogenation process. SIN butanol is the catalyst under obtained by dehydrogenation butanone. 4. Ethylene oxide gas law. 5. Ibuprofen France and butene by alkylation of benzene formation ibuprofen, ibuprofen oxidation of hydrogen peroxide ibuprofen, the final acid decomposition butanone and phenol. This method is characterized by : technology equipment corrosion and lighter, milder reaction conditions, conducive to industrialization.
purposes : butanone used primarily as solvents, used as lubricants dewaxing, and various industrial coating resins solvents, vegetable oil extraction and refining process azeotropic distillation process, the advantage is strong solubility, low volatile than acetone, which is the boiling point ketone solvents. Preparation butanone or medicine, dyes, detergents, spices, antioxidants and certain catalysts are intermediates, synthetic anti-peeling agent methyl ethyl ketone oxime, polymerization catalyst methyl ethyl ketone peroxide, resisting corrosion agent Methylpentynol, in the electronics industry for IC lithography after the reagent .
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