194 INORGANIC AGENTS 



Properties, — A light orange-yellow, amorphous, heavy, 

 impalpable powder ; odorless, and having a somewhat met- 

 allic taste ; permanent in the air, but turning darker on 

 exposure to the light ; almost insoluble in water ; insoluble 

 in alcohol. 



PREPARATIONS. 



Unguentum Hydrargyri Oxidi Flavi. Ointment of Yellow Mercuric 

 Oxide. (U. S. P.) 

 Yellow mercuric oxide, 10; ointment, 90. 



Oltatum Hydrargyri. Oleate of Mercury. (U. S. & B. P.) 

 Yellow mercuric oxide, 200; oleic acid, 800. (U. S. P.) 



Hrdrargyri Chloridum Corrosiyum:. Corrosive Mercuric 

 Chloride. HgCl,. (U. S. P.) 

 {Corrosive Chloride of Mercury, Corrosive Sublimate.) 



Synonym. — Hydrargyri perchloridum, B. P.; hydrargy- 

 rum birchloratum corrosivum, P. G.; hydrargyrum muriati- 

 cum corrosivum, hydrargyri bichloridum, sublimatus cor- 

 rosivus, sublimatum corrosivum, mercurius sublimatus 

 corrosivus, chloruretum (chloretum) hydrargyricum, per- 

 chloride of mercury, bichloride of mercury, E.; Deuto- 

 chlorure de mercure, sublime corrosif, chlorure mercurique, 

 Pr.; aetzendes quecksilberchlorid, aetzender quecksilbersub- 

 limat, G. 



Derivation. — Heat a mixture of mercuric sulphate, 20 ; 

 sodium chloride, 16; manganese dioxide,!. Hg SO^ -j- 2 

 NaCl + MnO, = HgCl, + Na, SO, + MnO,. The bichloride 

 sublimes and is condensed. 



Properties. — Heavy, colorless, rhombic crystals, or crys- 

 talline masses ; odorless, and having an acrid and persistent 

 metallic taste ; permanent in the air ; soluble in 16 parts of 

 water and in 3 parts of alcohol. 



Incompatibles. — It is incompatible with most substances. 



Dose.—B.. & C, gr.v.-vii. (.3-.5); Sh. & Sw., gr.ii. (.12); 

 D.,gr.^-i(-002-.008). 



