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Manganese(II) sulphate, 98% usually refers to the inorganic compound with the formula MnSO4.H2O.
M 1495 (OTTO) Manganese(II) sulphate, 98% Cas 10034-96-5 - used in the preparation of manganese and manganese dioxide. It finds application for remediation of manganese-deficient soil. It is also used in dry-cell batteries.