Chromic acid
In chemistry,
chromic acid is a
chromium compound, yet to be isolated, that would have the formula H
2CrO
4. There is a related
acid, also yet to be isolated called
dichromic acid with the formula H
2Cr
2O
7. While these acids are not available, they are known through their divalent anions (
chromate and
dichromate respectively) and the compounds formed from them. Please note that the acid
anhydride of chromic acid exists, chromium trioxide ( CrO
3), and that industrially, this compound is sometimes sold as "chromic acid".
Chromic acid solutions are generally acidified aqueous solutions of chromate or dichromate salts. These solutions tend to be powerful oxidants, capable of destroying all organics in glassware and so often used for the cleaning of glass.