8645. Sodium Molybdate(VI)

Nomenclature

CAS number: 7631-95-0
Sodium (T-4)-molybdate (MoO42-) (2:1); sodium molybdenum oxide.
MoNa2O4; mol wt 205.92.
Mo 46.59%, Na 22.33%, O 31.08%.
Na2MoO4.

Description and references

Thermal and X-ray diffraction studies: K. D. Singh Mudher et al., J. Alloys Compd. 396, 275 (2005).

Derivative

Dihydrate.

Nomenclature

CAS number: 10102-40-6
Molyhibit 100 (Amax).
MoNa2O4.2H2O; mol wt 241.95.
Mo 39.65%, Na 19.00%, O 39.68%, H 1.67%.

Properties

Cryst powder. Loses its water of crystn at 100°. Sol in 1.7 parts cold water, ≈0.9 part boiling water. pH of 5% aq soln at 25° = 9.0-10.0. Has been reported to be less toxic than the other corresponding compds of group 6B in the periodic table: Fairhall et al., Public Health Bull. no. 293 (1945).

Use

Manuf of inorganic and organic pigments, corrosion inhibitor, bath additive for metals finishing, reagent for alkaloids, micronutrient for plants and animals.