Soft white crystals, having a faint vinegar odor and, in dilute solutions, an astringent metallic taste. Freely soluble in water (1:2.3), and soluble in alcohol (1:30). ACTION AND USES: Used locally, like zinc sulphate, being somewhat less powerful. DOSAGE: 0.125 Gm. or 2 grains (U.S.P.). =Zinci Carbonas Praecipitatus (Zinc. Carb. Praec.), Precipitated Zinc Carbonate, U.S.P.= Impalpable, white, odorless, tasteless powder. Insoluble in water or alcohol. ACTION AND USES: Similar to, but without advantage over zinc oxide. =*Zinci Chloridum (Zinc Chlor.), Zinc Chloride, U.S.P.=--ZnCl{2}. White or nearly white, granular powder, porcelain-like masses or molded pencils, odorless, very deliquescent and intensely caustic. Very soluble in water (1:0.25) and in alcohol (1:1.3). ACTION AND USES: Antiseptic, astringent and escharotic. _*Liquor Zinci Chloridi (Liq. Zinc. Chlor.), Solution of Zinc Chloride, U.S.P._--ZnCl{2} (about 50 per cent.). =*Zinci Oxidum (Zinc. Oxid.), Zinc Oxide, U.S.P.=--ZnO. Fine, white or nearly white, odorless, tasteless powder. Insoluble in water or in alcohol. ACTION AND USES: Antiseptic and astringent, widely used either alone or in combination with other substances as a dusting powder and as a protective and sedative in ointments. _Glycerogelatinum Zinci Durum (Glycerogel. Zinc. Dur.), Firm Zinc Glycerogelatin, N.F._--Zinc oxide (10%) in water, glycerin and glycerinated gelatin. _Glycerogelatinum Zinci Molle (Glycerogel. Zinc. Mol.), Soft Zinc Glycerogelatin, N.F._--Zinc oxide (10%) in water, glycerin and glycerinated gelatin. _Mulla Zinci (Mull. Zinc.), Zinc Mull, N.F._ (Unguentum Zinci Extensum, N.F. III).--Zinc oxide (10%) in benzoinated suet and benzoinated lard. _Pasta Zinci (Past. Zinc.), Zinc Paste, N.F._ (Lassar's Zinc Paste).--Zinc oxide (24%), salicylic acid (2%), starch and petrolatum. _Pasta Zinci Mollis (Past. Zinc. Moll.), Soft Zinc Paste, N.F._ (Unna's Soft Zinc Paste).--Zinc oxide (25%), precipitated calcium carbonate, linseed oil and solution of calcium hydroxide. _Pasta Zinci Sulphurata (Past. Zinc. Sulphur.), Sulphurated Zinc Paste, N.F._ (Unna's Sulphurated Zinc Paste).--Zinc oxide (15%), precipitated sulphur (10%), purified siliceous earth and benzoinated lard. _*Unguentum Zinci Oxidi (Ung. Zinc. Ox.), Ointment of Zinc Oxide, U.S.P._ (Zinc Ointment).--Zinc oxide (20%) in benzoinated lard. =Zinci Phenolsulphonas (Zinc. Phenolsulph.), Zinc Phenolsulphonate, U.S.P.= (Zinc Sulphocarbolate).--The hydrated salt. Colorless, odorless crystals or granules having an astringent, metallic taste. Freely soluble in water (1:1.6), and in alcohol (1:1.8). ACTION AND USES: Similar to, but less active than zinc sulphate, over which it has no advantage. DOSAGE: 0.125 Gm. or 2 grains. =*Zinci Stearas (Zinc. Stear.), Zinc Stearate, U.S.P.=--Chiefly zinc stearate and palmitate.