Ferrous Sulphate

SPECIFICATION:

Ferrous iron (as Fe) per cent by weight, minimum                                     19.0

Sulphate Sulphur (as S) per cent by weight, minimum                              10.5

Free acid (as H,SO,) per cent by weight, maximum                                    1.0

Matter insoluble in water, per cent by weight, maximum                         1.0

pH(5% solution) not less then                                                                         3.5

Lead (as Pb) per cent by weight, maximum                                                0.003

Cadmium (as Cd) per cent by weight, maximum                                        0.0025

Arsenic (as As) per cent by weight, maximum                                             0.01

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