Description

Sodium tungstate dihydrate is a hydrated sodium salt of tungstic acid. It participates as a catalyst in the preparation of various epoxides.[1] Various crystallographic properties of sodium tungstate dihydrate have been analyzed.

Specification

Grade	High Purity
Formula	Na₂WO₄ ·2H₂O
MW	329.86
CAS	10213-10-2
Appearance	White fine crystalline powder
Identification	Passes test
Assay	99.0-101.0%
Insoluble matter	≤0.01%
Titrable free base	≤0.02%
Chloride (Cl)	≤0.005%
Nitrogen Compounds (as N)	≤0.001%
Molybdenum (Mo)	≤0.001%
Sulfate (SO4)	≤0.01%
Arsenic (As)	≤5ppm
Heavy Metals and Iron (as Pb)	≤0.001%
Storage	18-25℃

Application

Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones.

Sodium tungstate dihydrate (Na2WO4.2H2O) may be employed in the following studies:
As a derivatization reagent for the determination of hydrogen peroxide by a fluorimetric method.
Synthesis of N-hydroxy-desferrioxamine B, a metabolite of the microbial product desferrioxamine B.
Preparation of highly crystalline CaMoO4, SrMoO4, CaWO4 and SrWO4 nanoparticles.

Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate.

Documents

COA

SDS

Sodium Tungstate, Dihydrate