Iron(II) sulfate or ferrous sulfate is the chemical compound with the formula FeSO4. Known since ancient times as copperas and as green vitriol, the blue-green heptahydrate is the most common form of this material. ferrous sulfate is mainly used as a precursor to other iron compounds. It is a reducing agent, mostly for the reduction of chromate in cement.
Specification Of Ferrous Sulphate, Hepta hydrate ( Feso4.7H2O)

1) Apperance - free flowing bluish green crystals
2) Assay- 98 % Min
3) Ferric sulphate - 0.2 max
4) pH (5 % w/w solution ) at RT - 2.7 to 3.5
5) Moisture - 44 -46 %
6) Chloride - 0.005 % max
7) Lead- 0.005% max
8) Potassium- 0.05% max
9) Sodium - 0.05% max

Uses:

Nutritional supplement, Colorant, horticulture, animal feed, jewelry,

SPECIFICATIONS DRIED FERROUS SULPHATE:

Description Grayish white to buff powder
Solubility Soluble in water
Identification Test passes for Ferrous Salts and Sulphate as per
Arsenic N.M.T.3 PPM BDL
Copper N.M.T.50 PPM BDL
Zinc N.M.T.500 PPM BDL
Lead N.M.T.50 PPM BDL
Manganese N.M.T.0.01% PPM BDL
Basic Sulphate Complies to I.P. Test Test Passes
Caclmium BDL
Murcury BDL
Assay N.L.T.86% AND N.M.T.90% OF FeSO4