Nomenclature
CAS number: 12520-88-6
Tungstosilicic acid.
H
4O
40SiW
12; mol wt 2878.17.
H 0.14%, O 22.24%, Si 0.98%, W 76.65%.
H
4[SiO
4.(W
3O
9)
4].
Description and references
Prepn of hydrated compd: Grüttner, Jander
in Handbook of Preparative Inorganic Chemistry vol. 2, G. Brauer, Ed. (Academic Press, New York, 2nd
ed., 1965) pp 1717-1718.
Derivative
Hydrate.
Properties
White to slightly yellow, deliquesc crystals.
Very sol in water, alcohol. Keep tightly
closed.Use
Preparing heavy solns for separating minerals; as
a mordant for basic aniline dyes; as a reagent for pptn and determination
of alkaloids.