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CAS number: 7785-87-7, 10034-96-5 (monohydrate), 10101-68-5 (tetrahydrate)
PubChem: 24580
ChemSpider: 22984
EC Number: 232-089-9
RTECS number: OP1050000 (anhydrous), OP0893500 (tetrahydrate)
EU Index: 025-003-00-4
EU classification: Harmful (Xn), hazardous for the environment (N)
R-phrases: R48 / 20/22, R51 / 53
S-phrases: (S2), S22, S61
Molecular 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 / cm 3 (anhydrous), 2.95 g / cm 3 (monohydrate), 2.107 g / cm 3 (tetrahydrate)
Melting point: 710 ° C (anhydrous), 27 ° C (tetrahydrate)
Boiling point: 850 ° C (anhydrous)
Solubility in water: 52 g / 100 ml (5 ° C), 70 g / 100 ml (7 ° C)
Solubility: soluble in alcohol, insoluble in ether
Structure: Crystal structure
Other names: Manganese dioxide

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General Information

The chemical formula of MnSO4 contains about 32% Mn of this chemical. This colorless moist solid is a commercially important manganese (II) salt. In 2005, the importance of its production has been recognized and its production has become widespread. It is the precursor of manganese metal and many chemical compounds. It has a wide variety of hydrate structure.

Molecular Structure

O == Mn == O

Production and Reactions

It is obtained by reduction of manganese with chloride in acidic medium.
MnO2 4 HCl? MnCl2 Cl2 2 H2O MnO2 2 NaCl 2 H2SO4? MnSO4 Na2SO4 2 H2O Cl2

Usage areas

It plays an important role in the work of many enzymes in plants. It has been determined that it has a duty to activate about 30-35 enzymes.It is used as the participation of soil in appropriate amounts for this purpose.It also increases the resistance of the plant against cold.

It is used in reduction-oxidation (redox) reactions in chemical industry. It is also used in the production of electrolyte manganese.

This sector is used in the manufacture and disinfection of porcelain.


It is used as a drying agent in varnishes and colored materials in the paint sector.

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