Tin(II) sulfate

Tin(II) sulfate (SnSO₄) is a chemical compound. It is a white solid that can absorb enough moisture from the air to become fully dissolved, forming an aqueous solution; this property is known as deliquescence. It can be prepared by a displacement reaction between metallic tin and copper(II) sulfate:^[3]

Sn (s) + CuSO₄ (aq) → Cu (s) + SnSO₄ (aq)

Tin(II) sulfate

Unit cell of tin(II) sulfate.
Names
Other names Stannous sulfate
Identifiers
CAS Number	7488-55-3 Y
3D model (JSmol)	Interactive image
ChemSpider	21106484 Y
ECHA InfoCard	100.028.457
EC Number	231-302-2
PubChem CID	62643
UNII	0MFE10J96E Y
CompTox Dashboard (EPA)	DTXSID20884389
InChI InChI=1S/H2O4S.Sn.2H/c1-5(2,3)4;;;/h(H2,1,2,3,4);;;/q;+2;;/p-2 Y Key: RCIVOBGSMSSVTR-UHFFFAOYSA-L Y InChI=1/H2O4S.Sn.2H/c1-5(2,3)4;;;/h(H2,1,2,3,4);;;/q;+2;;/p-2/rH2O4S.H2Sn/c1-5(2,3)4;/h(H2,1,2,3,4);1H2/q;+2/p-2 Key: RCIVOBGSMSSVTR-YHUAHBEBAB
SMILES [O-]S(=O)(=O)[O-].[SnH2+2]
Properties
Chemical formula	SnSO4
Molar mass	214.773 g/mol
Appearance	white-yellowish crystalline solid deliquescent
Density	4.15 g/cm3
Melting point	378 °C (712 °F; 651 K)
Boiling point	decomposes to SnO2 and SO2
Solubility in water	33 g/100 mL (25 °C)
Structure[1]
Crystal structure	Primitive orthorhombic
Space group	Pnma, No. 62
Lattice constant	a = 8.80 Å, b = 5.32 Å, c = 7.12 Å[1]
Hazards
NFPA 704 (fire diamond)	1 0 0
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)	2207 mg/kg (oral, rat) 2152 mg/kg (oral, mouse)[2]
Related compounds
Other anions	Tin(II) chloride, tin(II) bromide, tin(II) iodide
Other cations	Lead(II) sulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Tin(II) sulfate is a convenient source of tin(II) ions uncontaminated by tin(IV) species.

Structure

In the solid state the sulfate ions are linked together by O-Sn-O bridges. The tin atom has three oxygen atoms arranged pyramidally at 226 pm with the three O-Sn-O bond angles of 79°, 77.1° and 77.1°. Other Sn-O distances are longer ranging from 295 - 334pm.^[3][4]

References

1. Donaldson, J. D.; Puxley, D. C. (1972). "The crystal structure of tin(II) sulphate". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 28 (3): 864–867. Bibcode:1972AcCrB..28..864D. doi:10.1107/S0567740872003322.
2. "Tin (inorganic compounds, as Sn)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
3. Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 451. ISBN 978-0-08-022057-4.
4. Donaldson, J. D.; Puxley, D. C. (1972). "The crystal structure of tin(II) sulphate". Acta Crystallographica Section B. 28 (3): 864–867. Bibcode:1972AcCrB..28..864D. doi:10.1107/S0567740872003322. ISSN 0567-7408.