5Msm>'«?L on NiU'opid'ic Acid, ^iM t(} 4J 



becomes purple on the addition of alcohol. Long-continued 

 digestion of bromanil with water appears slowly to produce a 

 small quantity of bromanilic acid ; at any rate, water, when long 

 boiled with bromanil, gradually becomes of a purple colour. 



Bromanilamide (C^^ N^ Br^ H'* O'*) is prepared by passing dry 

 ammoniacal gas into a hot solution of bromanil in alcohol con- 

 taining some bromanil in suspension. Bromanilamide is also 

 prepared when a mixture of bromanil and alcohol is heated along 

 with concentrated liquor ammonise. A smaller quantity of brom- 

 anilamide is obtained by this process than when all the sub- 

 stances employed are anhydrous, as a larger amount of the brom- 

 anilamate of ammonia, which dissolves in the spirit, is produced. 



Bromanilamide forms a brownish red crystalline powder, 

 which is nearly insoluble in water, alcohol and aether. It sub- 

 limes, under partial decomposition, in brown-coloured crystals. 

 That portion of the bromanilamide subjected to analysis had been 

 previously dissolved in a weak alcoholic solution of potash, and 

 precipitated by acetic acid. 



0-2555 grm. gave 0-3255 grm. of bromide of silver. 



Theory. Found. 



^d? '\o sac?fft 



19)89113 dd.1 



-^Mooirf Br2=160 54-06 54-21 



'''' Bromanilamic Acid. — Bromanil, in its reactions with aqueous 

 ammonia, appears closely to resemble chloranil. The brownish- 

 red solution of bromanil in strong aqueous ammonia, deposited 

 deep brownish-red needles of a salt which appears to be brom- 

 anilamate of ammonia. When sulphuric acid is cautiously 

 added to an aqueous solution of this salt, bromanilamic acid pre- 

 cipitates in nearly black-coloured needles. If, while neutralizing 

 the solution of this salt, any considerable elevation of tempera- 

 ture is not carefully avoided, the solution becomes colourless, 

 and crystals are deposited which appear to be bromanilic acid. 



St. Bartholomew's Hospital, 

 June 22, 1854. 



00-00 f 



296 100-00 



