414 SALTS OF THE HEAVY METALS 



Preparation. Unguentum Zinci Oxidi. 20 per cent, in ben- 

 zoinated lard. 



This ointment is very useful as a dressing for burns, eczema, 

 scratches, etc. A dusting powder of zinc oxide, talc and starch is 

 very useful in moist eczema, 



IJ Zinci Oxidi. 



Talci Purificati aa. 3 j 



Amyli 3 ij 



M. Ft. Desiccant Powder. 



IJ Zinci Oxidi 2. 



Adipis Benzoinati 8. 



M. Ft. Unguentum Zinci Oxidi. 



Lassar's Paste. 



IJ Acidi Salicylici 2. 



Zinci Oxidi. 



Amyli aa. 24. 



Petrolati 50. 



M. Ft. Pasta. 



IJ Olei Lini. 



Liquoris Calcis. 



Zinci Oxidi. 



CretsB aa. 100. 



M. Ft. Pasta Zinci Oxidi Mollis. (IJnna and N. F.) 



ZINOI CHLORIDUM — CHLORIDE OF ZINC 



This occurs as a white or nearly white granular powder, or in 

 porcelain like masses, or moulded into pencils, very deliquescent, 

 odorless, of a caustic taste. Freely soluble in water and alcohol. 



Preparation. Liquor Zinci Chloridi. 



This is not prepared from the chloride but from metallic zinc. 

 It contains about 50 per cent, of zinc chloride. 



Zinc chloride is the most caustic and least astringent of the zinc 

 salts. It is used almost entirely as a caustic or antiseptic and irri- 

 talit according to the strength of the solution. It is used more par- 

 ticularly as a caustic in fistulse, fouls in cattle and "sheep, shoe boils, 

 canker, etc. It may be used in strong solution for this purpose 

 or as a paste. Some even push the pencils into the sinuses. For 

 strong caustic action a 20 per cent, solution should be used or it may 

 be made into a paste in this proportion with flour and water. 

 Chloride of zinc is the base of most of the drug treatments for cancer. 

 It is usually applied as a paste for this purpose. 



IJ Sanguinarise Eadicis. 



Zinci Chloridi aa S iij 



Pulv. Acaciae. 



Aquae aa 5 j 



