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Basic Chromium Sulphate
Chromium(III) sulfate usually refers to the inorganic compound with the formula Cr2(SO4)3 â€¢ 12(H2O). This consists of the hydrated sulfate salt of the metal aquo complex with the formula [Cr(H2O)6]3+, which is responsible for the purple color of this salt. It is widely used in the tanning of leather, with associated environmental damage.