Characteristic

 

Manganese(II) sulfate usually refers to the inorganic compound with the formula MnSO₄·H₂O. This pale pink deliquescent solid is a commercially significant manganese(II) salt. 

Chemical formula:MnSO₄

Molar mass:151.001 g/mol (anhydrous);169.02 g/mol (monohydrate);223.07 g/mol (tetrahydrate);277.11 g/mol (heptahydrate)

Appearance:white crystals (anhydrous);pale pink solid (hydrates)

Density:3.25 g/cm³ (anhydrous);2.95 g/cm³ (monohydrate);2.107 g/cm³ (tetrahydrate)

Melting point:710 °C (1,310 °F; 983 K) (anhydrous);27 °C (tetrahydrate)

Boiling point:850 °C (1,560 °F; 1,120 K) (anhydrous)

Solubility in water:52 g/100 mL (5 °C);70 g/100 mL (70 °C)

Solubility:Very slightly soluble in methanol;insoluble in ether and ethanol.

Magnetic susceptibility (χ):1.3660×10⁻² cm³/mol

Crystal structure:orthogonal (anhydrous);monoclinic (monohydrate);monoclinic (tetrahydrate)

 

Application

  

Manganese(II) sulfate tetrahydrate is an essential mineral used in capsule, tablet and liquid form, which provides essential nutrients like vitamin, protein and in similar nutritional substance. It undergoes electrolysis to give manganese dioxide. Upon oxidation, it gives chemical manganese dioxide (CMD) and finds application in dry- cell batteries.