176 INOEGANIC AGENTS 



Dose.—JL. & C, gr.v.-x. (.3-.6) ; Sh. & Sw., gr.i,-ii. 

 [(.06-.12) ; D., gr.H (.008-.03). 



Abgenti iN'iTEAs DiLTJTus. Diluted Silver l^itrate. 

 (U. S. P.) 



Synonym. — Argenti et potassii nitras, B. P. ; mitigated 

 caustic, E. ; argentum nitricum crystallizatum, P. G. ; azotas 

 (nitras) argenticus, azotate d'argent, nitre lunaire, Fr. ; 

 salpetersaures silberoxyd, silbersalpeter, G. 



Derivation. — Melt silver nitrate, 30, with potassium 

 nitrate, 60, in a crucible at as low a temperature as possible. 

 Mix and cast into suitable moulds. 



Properties. — A white, hard solid, generally in the form 

 of pencils or cones of a finely granular fracture ; becoming 

 gray or grayish-black on exposure to light in presence of 

 organic matter ; odorless, having a caustic, metallic taste,, 

 and neutral reaction. Each of its constituents soluble in 

 water and alcohol to the extent mentioned under Argenti 

 Nitras and Potassii Nitras. Used only externally. 



, A!egenti ISTiTEAs Fusijs. Moulded Silver Nitrate. 

 (,U. S. P.) 



Synonym. — Lunar caustic, lapis infernalis, azotas 

 (nitras) argenticus fusus, E. ; argentum nitricum fusum, 

 P. G. ; azotate d'argent fondu, pierre infernale, Fr. ; hollen- 

 stein, geschmolzenes salpetersaures silberoxyd, G. 



Derivation. — Melt silver nitrate, 100, with hydrochloric 

 acid, 4, at as low a temperature as possible. Mix and pour 

 into suitable moulds. 



Properties.- — Practically same as above. Used only 

 externally. Silver oxide, cyanide, and iodide are official, 

 but unimportant in veterinary medicine. 



ACTIOW OF SILVER NITEATE. 



External. — Silver nitrate is more caustic in action than 

 any of the lead, copper or zinc salts (except the chloride). 

 .When applied externally in the pure state to a mucous 

 membrane, or a raw surface, it forms a white coating of 

 coagulated protein, or silver aluminate. This coating limits 



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