What is Caro’s acid?


Date Created: 10/21/2009

Last Updated:

Caro's acid (or peroxymonosulfuric acid) is an equilibrium product obtained by mixing H2O2 with sulfuric acid.

H2O2 + H2SO4 <--- ---> H2SO5 + H2O

It is used in the mining and hydrometallurgy industries for digesting ores and separating components, and for destroying cyanide residuals. Caro's acid is not sold as a product but is produced onsite at the point of application. FMC has developed several models of generators used for on-site production of Caro's acid.

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