24 INORGANIC SALTS AND THEIR PREPARATIONS 



HYDRARGYRI IODIDUM FLAVUM. Yellow Mercurous Iodide, Mercurous 

 Iodide, Protoiodide of Mercury, Yellow Iodide of Mercury, Hgl. Bright 

 yellow, amorphous powder, odorless and tasteless, almost insoluble in 

 water and wholly insoluble in alcohol or ether. 



Action: Alterative, antisyphilitic (in pill). 



Dose: o.oi Gm. (^ gr.). 



HYDRARGYRI IODIDUM RUBRUM. Red Mercuric Iodide, Mercuric Iodide, 

 Biniodide of Mercury, Red Iodide ,of Mercury, HgI 2 . Scarlet-red, 

 amorphous powder, odorless and tasteless, permanent in air, almost 

 insoluble in water, soluble in 115 parts of alcohol, 120 parts of ether. 



Action: Alterative, antisyphilitic. 



Dose: 0.003 Gm. (% gr.) 



Preparations: Liquor Arseni et Hydrargyri lodidi, U.S.P. 



HYDRARGYRI OXIDUM FLAVUM. Yellow Mercuric Oxide, HgO. Light, 

 orange-yellow, amorphous, heavy, impalpable powder, odorless, and hav- 

 ing a somewhat metallic taste, permanent in air, but turning dark when 

 exposed to the light, almost insoluble in water, insoluble in alcohol; 

 soluble in dilute hydrochloric or nitric acid, forming colorless solutions. 



Action: Used externally. 



Dose: Not given in U.S.P. 



Preparations: Oleatum Hydrargyri, U.S.P. 



Unguentum Hydrargyri Oxidi Flavi, U.S.P. 



HYDRARGYRI OXIDUM RUBRUM. Red Mercuric Oxide, Red Precipitate, 

 HgO. Heavy, orange-red, crystalline scales, or as a crystalline powder, 

 acquiring a yellow color when finely divided, odorless and having a some- 

 what metallic taste, permanent in air, almost insoluble in water, in- 

 soluble in alcohol, soluble in dilute hydrochloric or nitric acids. 



Action: Used externally. 



Dose: Not given in U.S.P. 



Preparation: Unguentum Hydrargyri Oxidi Rubri, U.S.P. VIII. 

 HYDRARGYRI SALICYLAS. Mercuric Salicylate, Mercuric Subsalicylate. 

 White, slightly yellowish or slightly pinkish powder, odorless, tasteless 

 insoluble in water or alcohol. 



Action: Antirheumatic. 



Dose: 0.004 Gm. (^{5 gr.). 



HYDRARGYRUM. Mercury, Quicksilver, Hg. Shining, silver- white metal; 

 liquid at ordinary temperatures/ odorless, tasteless, insoluble in ordinary 

 solvents, but soluble in nitric acid. Used in making the preparations of 

 mercury. 



Preparations: Hydrargyrum cum Greta, U.S.P. 

 Massa Hydrargyri, U.S.P. 

 Unguentum Hydrargyri, U.S.P. 

 Unguentum Hydrargyri Dilutum, U.S.P. 



HYDRARGYRUM AMMONIATUM. Amraoniated Mercury, White Precipitate, 

 HgNH 2 Cl. White, pulverized pieces, or as a white amorphous powder, 

 without odor, and having an earthy, afterward styptic and metallic 

 taste, permanent in air, insoluble in water or alcohol, soluble in warm 

 hydrochloric or nitric acid, etc. 



Action: Used externally. 



Preparations: Unguentum Hydrargyri Ammoniati, U.S.P. 



HYDRARGYRUM CUM CRETA. Mercury with Chalk, Grey Powder. Light 

 grey, rather damp powder, free from grittiness, without odor, and having 

 a sh'ghtly sweet taste, insoluble in neutral liquids. 



Action: Cholagogue, alterative. 



Dose: 0.25 Gm. (4 gr.). 



GROUP VII. ANTIMONY AND ARSENIC 



THE OFFICIAL U.S.P. AND N.F. ANTIMONY SALTS 



ANTIMONII ET POTASSH TARTRAS. Antimony and Potassium Tartrate, 

 Tartar Emetic, 2K(SbO)C4H 4 O -f- H 2 O. Crystals, or white granular 

 powder, odorless, having a sweet, afterward metallic taste, soluble in 

 15.5 parts water, insoluble in alcohol. 



