Vanadium(III) sulfate

Last updated
Vanadium(III) sulfate [1]
(V(aq)6)2(SO4)3.svg
Names
IUPAC name
Vanadium(III) sulfate
Other names
Vanadium trisulfate
Divanadium trisulfate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.827 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 237-226-6
PubChem CID
UNII
  • InChI=1S/3H2O4S.2V/c3*1-5(2,3)4;;/h3*(H2,1,2,3,4);;/q;;;2*+3/p-6
    Key: LZBNYDQIYWOAPC-UHFFFAOYSA-H
  • dihydrate:InChI=1S/3H2O4S.2H2O.2V/c3*1-5(2,3)4;;;;/h3*(H2,1,2,3,4);2*1H2;;/q;;;;;2*+3/p-6
    Key: YOTDVGFJBHYEPE-UHFFFAOYSA-H
  • [O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[V+3].[V+3]
  • dihydrate:O.O.O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[V+3].[V+3]
Properties
V2(SO4)3
Molar mass 390.074 g/mol
AppearanceYellow powder
Melting point 400 °C (752 °F; 673 K) Decomposes
Slightly soluble
Hazards
GHS labelling: [2]
GHS-pictogram-exclam.svg
Warning
H302
P264, P270, P301+P317, P330, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Vanadium(III) sulfate is the inorganic compound with the formula V2(SO4)3. It is a pale yellow solid that is stable to air, in contrast to most vanadium(III) compounds. It slowly dissolves in water to give the green aquo complex [V(H2O)6]3+.

The compound is prepared by treating V2O5 in sulfuric acid with elemental sulfur: [3]

V2O5 + S + 3 H2SO4 → V2(SO4)3 + SO2 + 3 H2O

This transformation is a rare example of a reduction by elemental sulfur.

When heated in vacuum at or slightly below 410 °C, it decomposes into vanadyl sulfate (VOSO4) and SO2. Vanadium(III) sulfate is stable in dry air but upon exposure to moist air for several weeks forms a green hydrate form.

Vanadium(III) sulfate is a reducing agent.

References

  1. ↑ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–93, ISBN   0-8493-0594-2
  2. ↑ PubChem. "Sulfuric acid, vanadium(3+) salt (3:2)". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-02-04.
  3. ↑ Claunch, Robert T.; Jones, Mark M.; Wolsey, Wayne C. (1963). "Vanadium(III) Sulfate". Inorganic Syntheses. Vol. 7. pp. 92–94. doi:10.1002/9780470132388.ch28. ISBN   978-0-470-13166-4.{{cite book}}: ISBN / Date incompatibility (help)


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