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Tutty Powder
Impure oxide of zinc. It is a substance which collects in the chimneys of the furnaces in which the ores of zinc are smelted.
Obtained by adding potassa, or an alkaline carbonate, to a solution of perchloride of tin.
This substance is also known as Stannic acid; hence, its compounds with alkalies are sometimes called STANNATES. soluble in acids, and in pure alkalies. If grain tin be heated in a test tube with nitric acid, the tin is converted, with evolution of yellow fumes, into a white powder, peroxide of tin. The nitric acid will convert the tin into an oxide, but it cannot combine with the oxide produced. 4114. To Prepare Pure Sulphate of Zinc. Mix 4 ounces laminated or granulated (Stöckhardt.) From this it appears that zinc with 3 fluid ounces oil of vitriol, and 1 nitrate of tin is a misnomer.