Ferric sulfate

Ferric sulfate (CAS 10028-22-5) is an inorganic iron salt commercially available under trade names including FERIX-3, BETA FLOC, FERAQUA, and Monsel's Salt. It carries no assigned E-code and is classified under HS code 2833298080. It is supplied as yellow crystals or grayish-white powder depending on hydration state.

In water treatment, ferric sulfate acts as a coagulant by hydrolyzing to form iron hydroxide flocs that bind suspended solids and phosphates for removal. In textile and leather processing, it functions as an oxidizing mordant that fixes dyes and tans hides through controlled iron-mediated cross-linking reactions. Pharmaceutical and mining applications exploit its antimicrobial and catalytic oxidation properties.

Ferric sulfate is available in technical and water treatment grades, with select grades meeting REACH registration requirements for EU supply. Packaging typically includes bulk bags and drums suited to industrial volumes. Buyers should confirm grade specification against intended application, particularly where potable water contact or pharmaceutical use is involved.