Manganese Sulphate usually refers to the inorganic compound with the formula MnSO4•H2O. This pale pink deliquescent solid is a commercially significant manganese salt.

  • Formula: MnSO4
  • Density: 3.25 g/cm³
  • Boiling point: 850 °C
  • Molar mass: 151.001 g/mol
  • Melting point: 710 °C


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(i) Free flowing form
(ii) Matter insoluble in water per cent by weight, maximum 1.2
(iii) Manganese (as Mn) content per cent by weight, minimum 30.5
(iv) Lead (as Pb) per cent by weight, maximum 0.003
(v) Copper (as Cu) per cent by weight, maximum 0.1
(vi) Magnesium (as Mg) per cent by weight, maximum 2.0
(vii) pH not less than 4.0
(viii) Sulphur (asS),percent by weight, minimum 10.0
(ix) Cadmium (as Cd), percent by weight, minimum 17.0

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