Nomenclature
CAS number: 13701-70-7
O
12S
3V
2; mol wt 390.07.
O 49.22%, S 24.66%, V 26.12%.
V
2(SO
4)
3.
Description and references
Prepd by the reduction of V2O5 in sulfuric acid with elemental sulfur: Auger, Compt. Rend. 173, 306 (1921);
Riveng, Bull. Soc. Chim. Fr. 4, 1697 (1937); Claunch, Jones, Inorg.
Synth. 7, 92 (1963).
Properties
Lemon-yellow powder. When heated in vacuum at
or slightly below 410°, it dec into VOSO4 and SO2. Stable in dry air. Upon exposure to moist air for several weeks,
a green hydrate forms. Very slowly sol in water at room temp, somewhat
faster in boiling water; practically insol in concd sulfuric acid;
sol in dil and concd nitric acid. Powerful reducing agent.Status
This monograph has been retired and is no longer subject
to revision or update.