Chromic acid is also called chromic anhydride, or chromic trioxide. Its molecular formula is CrO3, with relative molecular weight of 99.994. Appearing in dark red or purple trimetric crystallization, it is strong oxidizer and deliquescent. It dissolves in water, sulfuric acid and nitric acid.
The main applications are electro-plating, pharmaceuticals, printing, wood preservation, tanning and mordant dyeing and so on.