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Lithopone is a type of shining white pigment which is used as an integral part during production of paper, paints, face powder, inks, linoleum and leather. In the 1870s when lithopone was produced for the first time, it was used as a suitable alternative to or additive for white lead or lead carbonate to inhibit toxic content, to avoid its dissolving and discoloration due to its sulfur compound based content. Lithopone is the blending of zinc sulfide and barium sulfate which is not soluble. This mixture emerges from the liquid solution of zinc sulfide and barium sulfate. The original form of this precipitate is retrieved by filtering the mixture which is later goes through calcination (roasted) process in more than 600 degree C or 1.112 degree F temperature level. Though post World War I, titanium oxide is used as a good substitute of lithopone in different applications, yet it is extensively utilized for the formulation of various items like water based paints.
|SYNONYMS||Zinc Baryta White; Zinc Sulfide White.;Charlton white; Griffith's white; lithophone; Orr's white; White 77115; Bariumzinksulfatsulfid (German); Sulfato de bario y sulfuro de cinc (Spanish); Sulfure et sulfate de baryum et de zinc (French); Other RN.: 51931-19-2, 55819-30-2, 67351-98-8|