This section is from the book "A Treatise On Therapeutics, And Pharmacology Or Materia Medica Vol1", by George B. Wood. Also available from Amazon: Part 1 and Part 2.
This is prepared by exposing metallic zinc to the action of a solution of acetate of lead. The zinc takes the place of the lead in the solution, while the latter metal is deposited in the pure state. The liquid being now evaporated, and allowed to stand, yields acetate of zinc in crystals. The salt consists of one equivalent of acetic acid, one of oxide of zinc, and seven of water. It is in soft, white, shining, micaceous crystals, which effloresce in a dry air, are inodorous and of an astringent metallic taste, and are very soluble in water, and soluble also in alcohol.
The effects of this salt are essentially the same as those of the preceding, but milder, and less astringent. Though capable of doing injury in excessive doses, it is much less poisonous than the sulphate. It may be given internally for the same purposes, but is seldom used in that way. It is chiefly employed in the form of solution, as a collyrium in ophthalmia, or an injection in gonorrhoea. The dose for internal use would be one or two grains. The solution for topical application may contain from one to three grains to a fluidounce of water.