Manganese(II) sulfate

Manganese(II) sulfate
	Manganese(II) sulfate monohydrate
	Manganese(II) sulfate tetrahydrate
Names
	IUPAC name Manganese(II) sulfate
Identifiers
CAS Number	7785-87-7 ; 10034-96-5 (monohydrate) ; 10101-68-5 (tetrahydrate) ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:86360;
ChEMBL	ChEMBL1200557 ;
ChemSpider	22984 ;
ECHA InfoCard	100.029.172
EC Number	232-089-9;
PubChem CID	24580;
RTECS number	OP1050000 (anhydrous) ; OP0893500 (tetrahydrate);
UNII	IGA15S9H40 ; W00LYS4T26 (monohydrate) ; F46LH60L4M (tetrahydrate) ;
CompTox Dashboard (EPA)	DTXSID9044160 ;
	InChI InChI=1S/Mn.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 Key: SQQMAOCOWKFBNP-UHFFFAOYSA-L ; InChI=1/Mn.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 Key: SQQMAOCOWKFBNP-NUQVWONBAV;
	SMILES [Mn+2].[O-]S([O-])(=O)=O;
Properties
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
Structure
Crystal structure	orthogonal (anhydrous) ; monoclinic (monohydrate) ; monoclinic (tetrahydrate)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H373, H411
Precautionary statements	P260, P273, P314, P391, P501
NFPA 704 (fire diamond)	1 0 1
Safety data sheet (SDS)	ICSC 0290
Related compounds
Other cations	Chromium(III) sulfate; Iron(II) sulfate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

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. Approximately 260,000 tonnes of manganese(II) sulfate were produced worldwide in 2005. It is the precursor to manganese metal and many other chemical compounds. Manganese-deficient soil is remediated with this salt.