White Pigment.

Scientific American 8, 17.2.1866

Mr. John Dale, of Manchester, proposes to decompose the material called satin white, containing sulphate of lime and alumina by chloride of barium, or strontium, so as to replace, or partially so, the sulphate of lime by the sulphates of barium or strontium. The proportions to be used of the chlorides of barium or strontium will be according to the amount of sulphate of lime to be replaced. Secondly, he proposes to produce a substitute for satin white; by using caustic baryta or strontia, instead of lime as usual.