Iron(III) sulfate is also used in pigments, pickling baths for aluminum and steel. It acts as a mordant in dyeing, as a coagulant for industrial wastes. In the medical field, it is used as an astringent and styptic. It is involved in the preparation of aromatic esters from the corresponding acids and alcohols. Further, it is employed in the oxidation of pyrite.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.