METHYLETHYLKETONE, ETC. Ill 



sulphuric acid ; and by heating the same acid with 

 concentrated hydrochloric acid to 130-150. 



Properties. Colorless, pleasant smelling liquid, of 

 specific gravity, 0.815 ; boiling point, 101. Oxidized 

 with potassium, bichromate, and dilute sulphuric acid, 

 it yields acetic and propionic acids. 



3. Methylethylketone, C 4 H 8 CH 3 .CO.C 2 H 5 . By the 

 oxidation of secondary butyl alcohol (p. 68). By the 

 action of zincethyl on acetyl chloride. In small quan- 

 tity in the preparation of acetone on a large scale. 

 From ethyl-methyl acetone carbonate (obtained by the 

 successive action of sodium and methyl iodide on acetic 

 ether) by heating with potassa ley. Colorless liquid, 

 boiling at 81 ; of 0.8125 specific gravity. Combines 

 w^ith alkaline bisulphites. 



4. Methylpropylketone, C 5 H 10 O = CH 3 .CO.C 3 H 7 . Is 

 produced by the distillation of a mixture of calcium 

 butyrate* and acetate ; as a secondary product by the 

 distillation of calcium butyrate and by the oxidation 

 of isoamyl alcohol (p. 71). By the oxidation of the 

 mixture of alcohols from the heptyl hydrides of petro- 

 leum. Colorless liquid; boils at 102-105; specific 

 gravity, 0.807. 



m 5. Ethylpropylketone, C 6 H 12 = C 2 H 5 .CO.C 3 H 7 . By the 

 distillation of calcium butyrate ; by the action of butyl 

 chloride on zincethyl. Boiling point, 126 ; specific 

 gravity, 0.818 at 17.5. 



6. 



Is formed as the principal product by the distillation 

 of calcium butyrate. Boiling point, 144; specific 

 gravity at 20, 0.82. 



7. Methylbutylketone, C 8 H 12 = CH 3 .CO.C 4 H 9 . By 

 the oxidation of secondary hexyl alcohol ; by the oxi- 

 dation of the mixture of alcohols obtained from the 

 hexyl hydrides of petroleum. Boiling point, 127 ; 

 specific gravity, 0.8298. 



