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Manganese (II) sulfate

CAS number : 10034-96-5

Molecular weight :169.02

Molecular formula/chemical symbol :MnSO4.H2O

Description :

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. Like many metal sulfates, manganese sulfate forms a variety of hydrates: monohydrate, tetrahydrate, pentahydrate, and heptahydrate. The monohydrate is most common. All of these salts dissolve to give faintly pink solutions of the aquo complex [Mn(H₂O)₆]²⁺. The pale pink colour of Mn(II) salts is highly characteristic.

Manganese(II) sulfate
Identifiers
CAS number	7785-87-7
PubChem	24580
ChemSpider	22984^Y
UNII	IGA15S9H40^Y
EC number	232-089-9
ChEMBL	CHEMBL1200557^N
RTECS number	OP1050000 (anhydrous) OP0893500 (tetrahydrate)
Jmol-3D images	Image 1
Properties
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/cm³ (monohydrate) 2.107 g/cm³ (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	orthogonal (anhydrous) monoclinic (monohydrate) monoclinic (tetrahydrate)
Hazards
MSDS	ICSC 0290
EU Index	025-003-00-4
EU classification	Harmful (Xn) Dangerous for the environment (N)
R-phrases	R48/20/22, R51/53
S-phrases	(S2), S22, S61
Related compounds
Other cations	Chromium(III) sulfate Iron(II) sulfate
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

USES :

System for electrolytic manganese, manganese fertilizer, paint driers, etc.

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