Method of producing crystalline ammonium metatungstate

Details Method of producing crystalline ammonium metatungstate Method of producing crystalline ammonium metatungstate

1985-05-28

1986-12-02

Doll, John

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

23300, C01G 4100

Patent

active

046264248

ABSTRACT:
A process is disclosed for producing a relatively pure solid ammonium metatungstate by precipitating the solid from a mixture of an ammonium metatungstate solution and a lower alcohol having the formula C.sub.n H.sub.n+1 OH. The ammonium metatungstate solution which is used can be made by any means including the adjusting the pH of an ammonium paratungstate solution followed by digestion of the solution to form ammonium metatungstate.

REFERENCES:
patent: 3175881 (1965-03-01), Chiola et al.
patent: 3925028 (1975-12-01), Lozano
patent: 4430310 (1984-02-01), Malito et al.
Taylor, "The Ammonium Tungstates," JACS, vol. 24, (1902), pp. 629-643.
Skoog et al., Fundamentals of Analytical Chemistry (1963), pp. 151, 152, Holt, Rinehart and Winston, Inc.

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