ACETONE
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Written by tom
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Friday, 29 February 2008 |
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An important industrial solvent, used in the manufacture of lacquers, plastics, smokeless powder, for dewaxing lubricating oils, for dissolving acetylene for storage, for dyeing cotton with aniline black, and as a raw material in the manufacture of other chemicals. It is a colorless flammable liquid with a mintlike odor and is soluble in water and in ether. The composition is CH3·CO·CH3, specific gravity 0.790, boiling point 56°C and solidification point -94°C.
Acetone is made from isopropyl alcohol, or by a special fermentation of grain. The oily residue from the distillation is called acetone oil and is used as a denaturant of alcohol. Diacetone, or diacetone alcohol, is a colorless liquid of the composition CH3·CO·CH2° COH(CH3)2 with a pleasant odor. It is used as a solvent for nitrocellulose and cellulose acetate, for gums and resins, in lacquers and thinners, and in ink removers. Because of its low freezing point and miscibility with castor oil it is used in hydraulic brake fluids. The specific gravity is 0.938, boiling point 166°C, and freezing point -54°C. Synthetic methyl acetone is a mixture of about 50% acetone, 30 methyl acetate, and 20 methanol, used in lacquers, paint removers, and for coagulating latex. Dihydroxyacetone, a colorless crystalline solid produced from glycerin by sorbose bacteria reaction, is used in cosmetics, and in preparing foodstuff emulsions, plasticizers, and alkyd resins. It is soluble in water and in alcohol.
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Last Updated ( Saturday, 01 March 2008 )
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