Chemistry:Tin(II) sulfate

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Tin(II) sulfate
Tin(II) sulfate crystallizes in an heavily distorted barium sulfrate structure.
Unit cell of tin(II) sulfate.
Names
Other names
Stannous sulfate
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 231-302-2
UNII
Properties
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
33 g/100 mL (25 °C)
Structure[1]
Primitive orthorhombic
Pnma, No. 62
a = 8.80 Å, b = 5.32 Å, c = 7.12 Å[1]
Hazards
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
0
1
0
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
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).
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Infobox references

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 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. 1.0 1.1 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. doi:10.1107/S0567740872003322. 
  2. "Tin (inorganic compounds, as Sn)". Immediately Dangerous to Life and Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH). https://www.cdc.gov/niosh/idlh/7440315.html. 
  3. 3.0 3.1 Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 451. ISBN 978-0-08-022057-4. https://books.google.com/books?id=OezvAAAAMAAJ&q=0-08-022057-6&dq=0-08-022057-6&source=bl&ots=m4tIRxdwSk&sig=XQTTjw5EN9n5z62JB3d0vaUEn0Y&hl=en&sa=X&ei=UoAWUN7-EM6ziQfyxIDoCQ&ved=0CD8Q6AEwBA. 
  4. Donaldson, J. D.; Puxley, D. C. (1972). "The crystal structure of tin(II) sulphate". Acta Crystallographica Section B 28 (3): 864–867. doi:10.1107/S0567740872003322. ISSN 0567-7408.