IRON AND POTASSIUM TARTRATE 183 



Uses. — -This preparation is used as a chemical antidote 

 to arsenic, whereby the arsenic mass is mechanically en- 

 wrapped and converted into the insoluble arsenite. The 

 administration of the arsenic antidote should be followed 

 by emetics, or the stomach pump. 



Dose. — Large quantities should be repeated frequently 

 od libitum. 



Ferri et Potassii Tartras. Iron and Potassium Tartrate. 



(U. S. P.) 

 {Potassio- Ferric Tartrate.) 



Synonym. — Ferrum tartaratum, B. P.; tartarus ferratus, 

 P. G.; ferri potassio-tartras, ferrum tartarizatum, tartras 

 ferrico-kalicus, etc., E.; tartrate de fer et de potasse, tartre 

 martial, Fr.; weinsaures eisenoxyd-kali, eisenweinstein, G. 



Derivation. — Solution of ferric sulphate, 100 Cc; tartaric 

 acid, 29gm.; distilled water, 200 Cc; ammonia water and 

 water, of each a sufficient quantity. Made by solution and 

 precipitation. 



Properties. — Thin, transparent scales, varying in color 

 from garnet-red to reddish-brown ; without odor, and having 

 a sweetish, slightly ferruginous taste ; slightly deliquescent 

 in the air ; very soluble in water ; insoluble in alcohol. 



Dose. — D., gr.v.-x. (.3-. 6). 



Ferri et Ammonii Citras. Iron and Ammonium Citrate. 

 (U. S. & B. P.) 



Synonym. — Ferrum citricum ammoniatum, P. G.; ferri 

 ammonio-citras, ferro-ammonium citricum, ammonio-citrate 

 of iron, E.; citrate de fer et d'ammoniaque (de fer ammo- 

 niacal), citrate ferrique ammoniacal, Fr.; citronensaures 

 eisenoxyd-ammonium (ammoniak), G. 



Derivation. — Solution of ferric citrate, 100 Cc; j,mmonia 

 water, 40 Cc Evaporate. U. S. P. 



Properties. — Thin, transparent, garnet-red scales, with- 

 out odor, and having a saline, mildly ferruginous taste ; 



