Notes on Foreign Inventions and Discoveries. New Pigment for Painting in China.

Scientific American 14, 5.4.1862

T. Cobley, of Meerholz, Germany, has taken out a patent for manufacturing fluo-silicate of tin as a new pigment. He makes it by dissolving the oxide of tin in fluo-silicic acid, or by decomposing a solution of the comon salt of tin, by fluo-silicic acid. The fluo-silicate thus obtained is heated with the sulphide of ammonium or sulphureted hydogen, and forms the sulphide which is used as a pigment, and also as a glaze for porcelain.

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