Venator Wasserchemie Holding (formerly Sachtleben Wasserchemie (Holding)) is a company that manufactures chemical products. It produces titanium dioxide (TiO2) and performance additives, including iron oxide, ultramarines, barium sulfate, zinc sulfide, infrared reflecting pigments, lithopone, chromium oxide, carbon black, complex inorganic pigments, pigment preparations, driers, and ferrous sulfate heptahydrate. The company also is engaged in water treatment manufacturing and research activities.