This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
Zinci Sulphas. Zinc Sulphate. ZnSo4+7H2O=286.64. Synonym. - White Vitriol.
Lead, iron, copper and arsenic.
Zinci Carbonas Praecipitatus. Precipitated Zinc Carbonate. 2(ZnCo3)3Zn(OH)2?=546.94?.
Boil together solutions of Zinc Sulphate and Sodium Carbonate. 3ZnSo4+3Na2Co3+2H2O=2(ZnCo3)3Zn(OH)2+2Co2+3Na2So4. Dry the precipitated Zinc Salt.
An impalpable, white powder, of somewhat variable chemical composition, without odor or taste. Similar in constitution to Magnesium Carbonate. Solubility. - Insoluble in water and Alcohol.
Sulphates, chlorides and copper.
Zinc Carbonate is rarely used except to make the Oxide and Acetate.
Zinci Oxidum. Zinc Oxide. ZnO=81.06.
Heat the precipitated Carbonate to redness in a crucible. 2(ZnCo3)3Zn(OH)2,=3ZnO+3H2O+Co2.
An amorphous, white, tasteless, and odorless powder. Solubility. - Insoluble in water and Alcohol.
The carbonate and its impurities. Dose, 1 to 5 gr.; .06 to .30 gm.
Unguentum Zinci Oxidi. Ointment Of Zinc Oxide. Zinc Oxide, 200; Benzoinated Lard, 800; melted together.
Oleatum Zinci. Oleate Of Zinc. Zinc Oxide, 50; Oleic Acid, 950.
Zinci Acetas. Zinc Acetate. Zn(C2H3O2)2,+2H2O=218.74.
Dissolve Zinc Oxide in Acetic Acid and water, and boil. ZnO+2Hc2h3o2=Zn(C2H3O2)2+H2O. Zinc Acetate crystallizes out.
Soft, white, six-sided monoclinic plates, of a pearly lustre, having a faintly acetous odor, and an astringent, metallic taste. Solubility.- In 2.7 parts of water; and in 36 parts of Alcohol.
Those of the precipitated carbonate.
The same as of the sulphate.
Dose, 1/2 to 2 gr.; .03 to .12 gm. (tonic).
8. Zinci Bromidum. See Bromine.
9. Zinci Iodidum. See Iodine.
10. Zinci Valerianas. See Valeriana.