326 PROCEEDINGS OP THE AMERICAN ACADEMY 



Diargentic Anihnucoxyhromate, AgjCiyHgBrNOg. — When argentic 

 nitrate was added to an aqueous solution of the free acid, a pale yel- 

 low gelatinous precipitate was thrown down, which apparently con- 

 tained one atom of silver. If, however, the acid was dissolved in two 

 equivalents of ammonic hydrate, and the solution was then added to 

 an excess of argentic nitrate, a voluminous bright orange-yellow pre- 

 cipitate was thrown down, which on standing became dense and semi- 

 crystalline, and contained two atoms of silver. When warmed with 

 an excess of argentic nitrate in a feebly ammuniacal solution, no imme- 

 diate reduction took place. 



0.4275 grra. of the salt dried over HgSO^ gave 0.3290 grm. AgBr. 



Calculated for AgjCiQHgBrNOs. Found. 



Ag 44.64 44.21 



Dipotassie Anilmucoxyhromate, \^^C^^^,^t^Oq. — On the addition 

 of an alcoholic solution of potassic hydrate to a solution of the acid 

 in anhydrous ether, a pale yellow salt was thrown down, which was 

 well washed with anhydrous ether and dried in vacuo over sulphuric 

 acid and solid sodic hydrate. 



0.3556 grm. of the salt gave 0.1805 grm. KoSO,. 



Calculated for KaCioHoBrNOg. Found. 



22.58 22.79 



While anilmucoxybromic acid forms by preference monobasic salts, 

 it is evidently capable of exchanging two of its hydrogen atoms for 

 metals. 



Phemjlhydrazine Anilmucoxyhromate, CjgH^BrNOg . CyH^No . 1120. 

 — When phenylhydrazine hydrochlorate is added to anilmucoxybromic 

 acid dissolved in a dilute solution of sodic acetate, a colorless crystal- 

 line precipitate soon separates, which after washing with cold water 

 becomes somewhat discolored on drying. The compound is but spar- 

 ingly soluble in cold water, more readily in hot, but it cannot be 

 recrystallized from hot water without decomposition. It is readily 

 soluble in alcohol, but nearly insoluble in ether. It is readily decom- 

 posed in the cold by dilute hydrochloric pjid, or by a dilute solution 

 of sodic carbonate, with the formation of phenylhydrazine. This be- 

 havior showed the substance to be a simple salt of phenylhydrazine, 

 and analysis also failed to show the elimination of water. 



0.3708 grm. of the air-dried substance gave 36.5 cc. of moist nitro- 

 gen at 25° under a pressure of 726 mm. 



Calculated for Ci^HioBrNsOa . H^O. Found. 



N 10.60 10.77 



