86 ACETIC ACID. 



amine on chloracetic acid; by the evaporation of a 

 solution of creatine (which see) with barium hydroxide ; 

 and by heating caffeine for several hours with barium 

 hydroxide. Colorless, rhombic prisms, easily soluble in 

 water, less in alcohol, fuses somewhat above 100, and 

 sublimes undecomposed. Yields salts with acids and 

 with bases. 



Ethylglvcocol, CH 2 (NH.C 2 H 5 ).CO.OH (isomeric 

 with the ethyl ether of glycocol), is formed from ethyl- 

 amine and monochloracetic acid. Small, laminated 

 crystals, which deliquesce in the air, become brown at 

 150-160, and fuse at a higher temperature, undergoing 

 decomposition. Like glycocol, it combines with acids, 

 bases, and s&lts.Diethylglycocol C 2 H 3 [N(C 2 H 5 ) 2 ]0 2 is 

 obtained from monochloracetic acid by the action of 

 diethylamine. Deliquescent crystals, which sublime 

 under 100. 



Acetylglycocol (Aceturic acid), CH 2 (KE.C 2 H 3 0). 

 CO.OH, results by the action of acetyl chloride on 

 glycocol silver. Small, white needles, soluble in water 

 and alcohol, which turn brown at 130. Monobasic 

 acid; forms easily soluble salts. 



In the preparation of glycocol from monochloracetic 

 acid and ammonia, there are formed as secondary pro- 

 ducts: Diglycolamidic acid C 4 H 7 N0 4 and triglycolamidic 

 acid C 6 H 9 jfr0 6 . Both compounds crystallize well and 

 unite with bases and acids. 



{SO 2 OH 

 CO OH is formed ky the 



action of sulphuric anhydride on acetic acid with the 

 aid of heat. Its salts with the alkalies are produced by 

 heating monochloracetic acid with concentrated solu- 

 tions of alkaline sulphites. Colorless, deliquescent 

 prisms ; fusing point, 62. Bibasic acid. The barium 



( ^102 c\ 

 salt CH 2 j QQ Q Ba -f H 2 crystallizes in laminae. 



When heated with sulphuric acid, it is converted into 

 disulphometholic acid and carbonic anhydride. 



