Vanadium(III) sulfate
Appearance
Names | |
---|---|
IUPAC name
Vanadium(III) sulfate
| |
Other names
Vanadium trisulfate
| |
Identifiers | |
ChemSpider | |
ECHA InfoCard | 100.033.827 |
EC Number |
|
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
Properties | |
V2(SO4)3 | |
Molar mass | 390.074 g/mol |
Appearance | yellow powder |
Melting point | 400 °C, decomposes |
slightly soluble | |
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:[2]
- 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
- ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–93, ISBN 0-8493-0594-2
- ^ Robert T. Claunch, Mark M. Jones "Vanadium(III) Sulfate" Inorganic Syntheses, 1963, Volume 7, pages 92–94. doi:10.1002/9780470132388.ch28