Tungsten(VI) oxide, also known as tungsten trioxide or tungstic anhydride, WO3, is a chemical compound containing oxygen and the transition metal tungsten. It is obtained as an intermediate in the recovery of tungsten from its minerals
TO 300 (OTTO) Tungsten oxide nanopowder, (yellow) APS 50 nm, 99.9% used as a Catalysts, Ceramic pigments, Fire-proofing fabrics.