Iron (II) sulfate (ferrous sulfate) is an industrial salt that is used in metallurgy, manufacture of lithium-ion battery materials, water treatment, and metal pickling.
Ferrous Sulfate is often used as a primary cleaner removing oxidation and scale from Iron.
Ferrous Sulfate Safety Data Sheet (SDS)
Ferrous Sulfate Technical Data Sheet (TDS)
Ferrous Sulfate Certificate of Analysis (Example COA)