Lithopone powder is a white pigment primarily composed of barium sulfate and zinc sulfide. It’s classified as C.I. Pigment White 5. It is widely used as a white pigment in various applications, including white paints, especially in polyolefin, vinyl resins, and ABS resin. Its effectiveness stems from its ability to scatter light, providing opacity and whiteness. Its production involves the precipitation of barium sulfide and zinc sulfate. The specific ratio of the components affects its properties such as opacity and tinting strength.