104 ACETIC ALDEHYDE. 



and, with phosphorus chloride, hydrochloric acid, etc., 

 they yield the same products as alhehyde. 



{OTT 

 j^jj 2 Is formed 



when aldehyde, either alone or in ethereal solution, is 

 brought together with dry ammonia. Colorless, lus- 

 trous rhombohedrous. Fusing point, 70-80 ; easily 

 soluble in water ; more difficultly soluble in alcohol ; 

 insoluble in ether. 



Hydracetamide, C 6 H 12 ^ 2 = (CH 3 .CH) 3 E" 2 . Is formed 

 when a solution of aldehyde in alcoholic ammonia is 

 allowed to stand for some time. Amorphous, easily 

 soluble powder. Diatomic base. When boiled with 

 water or dilute acids, it is resolved into ammonia and 

 oxytrialdine C 6 H n NO, an amorphous, brown substance, 

 possessing basic properties. 



Aldehyde-hydrocyanate, CH 3 .CH j jf Is pro- 



duced by the direct combination of aldehyde with 

 anhydrous hydrocyanic acid. Colorless liquid ; soluble 

 in water and alcohol in all proportions ; boiling point, 

 183 ; is, however, partially resolved at this temperature 

 into hydrocyanic acid and aldehyde. Concentrated 

 hydrochloric acid decomposes it at the ordinary tem- 

 perature, forming ammonium chloride and lactic acid. 



Aldehyde-acetate, CH 3 .CH j Q C 2 H 3 Is formed 

 by direct union of aldehyde with acetic anhydride at 

 180. Colorless liquid, boiling at 169. Does not mix 

 with water. 



Acetal, C 6 H 14 2 = CH 3 .CH j '^ Is produced 



by the slow oxidation of alcohol (hence contained in 

 crude spirits of wine), and is a secondary product in 

 the preparation of aldehyde ; and can be prepared by 

 heating alcohol with aldehyde to 100 ; or by double 



