Zinci Chloridum. Zinc Chloride

Made by dissolving zinc which has been melted and poured into cold water, in dilute hydrochloric acid, and boiling. It then goes through several purifying pro-cesses. A whitish-gray, deliquescent substance, soft, like wax, and with very corrosive and irritant action. It is used as a caustic and acts powerfully, causing destruction of the part, with severe pain, followed by sloughing which heals slowly. An impure solution known as Burnett's fluid, containing 200 grains to ℥ i. of water, is sold as a disinfectant and has caused numerous cases of poisoning. The symptoms, which are those of severe gastro-enteritis and collapse, come on immediately, and death may result in a few hours, or be delayed for several days.

Zinci Sulphas. Zinc Sulphate

Made by dissolving zinc in dilute sulphuric add, and crystallizing. Soluble in water. In small doses sulphate of zinc has tonic and astringent properties. Continued long in medicinal doses it may cause ulceration of the mucous membrane of the alimentary canal. Zinc sulphate is a specific emetic. It acts promptly, and entirely by its local irritant action, not being absorbed, and causing no flow of secretions. It is not constitutionally depressing, and causes but little nausea either before or after the act of vomiting.

1 Zinc solution for the disinfection of white clothing. Sulphate of zinc, ℥ ii. Common salt, ℥ iv. Water, 1 gallon. Soak clothes for from 4 to 6 hours, boil, and wash.

Average dose (medicinal), gr. 1/10-0.006 Gm.

Dose (emetic), gr. xv.-I Gm., largely diluted with warm water, and given every fifteen minutes until vomiting occurs.

Zinci Oxidum. Zinc Oxide

A yellowish white powder, insoluble in water, and used principally to dust over the skin as an astringent

Unguentum Zinci Oxidi. Ointment Of Zinc Oxide

Made of oxide of zinc, usually twenty parts, to ben zoinated lard, eighty parts.