Vanadium

Sodium vanadate is a yellow solid which is soluble in water. Its use is limited due to its hygroscopic property.

Vanadyl(IV) sulfate, VOSO₄, is a blue crystalline solid that is normally stable in room conditions. It is a moderately strong reducing agent, being oxidized in acidic solution to the vanadyl(V) ion and in alkaline solutions to the vanadate ion, both of which are yellow-orange in color. It is reduced by zinc amalgam to a mixture of green vanadium(III) and purple vanadium(II) ions.

Vanadyl(IV) sulfate, VOSO₄, is a blue crystalline solid that is normally stable in room conditions. It is a moderately strong reducing agent, being oxidized in acidic solution to the vanadyl(V) ion and in alkaline solutions to the vanadate ion, both of which are yellow-orange in color. It is reduced by zinc amalgam to a mixture of green vanadium(III) and purple vanadium(II) ions.

Vanadyl (acetylacetonate) is the chemical compound with the formula VO (C₅H₇O₂)₂. This blue-green coordination complex consists of the vanadyl group, VO²⁺, bound to two acetylacetonate anions, ^acac−. Like other charge-neutral acetylacetonates, this complex is soluble in organic solvents.