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Iron(II) sulfate heptahydrate is used as a precursor to prepare other iron compounds such as a lawn conditioner and a mordant for wool dyeing. It is actively used in the manufacture of ink including iron gall ink. As a reducing agent, it participates in the reduction of chromate in cement. It is also used in industrial water treatment plants to remove phosphate. It is also used in the gold refining process to precipitate metallic gold. Woodworkers use aqueous solutions of ferrous sulfate to color maple wood a silvery hue. It finds application in the treatment of iron chlorosis, which arises due to deficiency of iron in horticulture.
Harman, D. G.; Gorkin, R.; Stevens, L.; Thompson, B.; Wagner, K.; Weng, B.; Wallace, G. G. Poly(3, 4-ethylenedioxythiophene): dextran sulfate (PEDOT: DS)-A highly processable conductive organic biopolymer. Acta Biomater. 2015, 14, 33-42.
Setifi, Z.; Setifi, F.; Francuski, B. M.; Novakovic, S. B.; Merazig, H. Crystal structure of tetraaqua[2-(pyridin-2-yl)-1H-imidazole-2N2, N3]iron(II) sulfate. Acta Cryst. 2015, E71 (4), 346-349.
Hazard Statements: H302-H315-H319
Harmful if swallowed. Causes skin irritation. Causes serious eye irritation.
Precautionary Statements: P260-P201-P280g-P304+P340-P405-P501a
Do not breathe dust/fume/gas/mist/vapours/spray. Obtain special instructions before use. Wear protective gloves. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.