BENZENE. 263 



with monophenyloxamide, AQ ^-jp by evaporating a 



solution of anilin cyanide (p. 265) with hydrochloric 

 acid. Shiny crystals, that fuse at 245, and are sub- 

 limable. 



CO.NH.C 6 !! 5 

 Oxamlic acid (Phenyloxamic acid), QQQJJ 



is produced by heating anilin with an excess of oxalic 

 acid. Crystalline scales, easily soluble in hot water, 

 but slightly in cold. Has a strong acid reaction. 

 Monobasic acid. 



Phenylcarbamide (Phenylurea), COJ 



produced like ethylurea (p. 230) by the decomposition 

 of phenol cyanate with ammonia ; by the mixing of 

 potassium cyanate with anilin sulphate ; by the slow 

 action of the vapor of cyanic acid on anilin, etc. Color 

 less, needle-shaped crystals, difficultly soluble in cold 

 water, easily in hot water, in alcohol and ether. Is de 

 composed by heat, yielding ammonia, cyanuric acid, and 



Diphenylurea (Carbanilide), CO(NILC 6 H 5 ) 2 , which 

 is also produced by bringing together phenol cyanate 

 with water or anilin ; by heating 1 part urea with 3 

 parts anilin at 150-170 ; and, together with formanilide, 

 by heating oxanilide. Needles of a silken lustre, 

 sparingly soluble in water, easily soluble in alcohol ; 

 fuses at 205. Volatile without decomposition. 



Phenylcarbamic acid (Carbanilic acid), 



( Nil C 6 IP 

 CO j QJJ Not known in an isolated condition. 



Its ethyl ether is produced by the action of ethyl chlor- 

 carbonate on anilin. It forms colorless needles, that 

 fuse at 52. Treated with concentrated potassa-ley, or 

 heated with anilin, it yields diphenylurea. 



{Nil C 6 1I 5 

 ^-jp Is pro 



duced by the action of ammonia on phenyl mustard-oil ; 



