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Sodium Tungstate CAS 13472-45-2 is colorless crystals.Soluble in water; insoluble in alcohol and acids. Melting point 3410 °C(lit.) Boiling point 5660 °C.Noncom- bustible.
Specification
High-class Refined Crude
WO3 ≥69.0 ≥69.0 ≥68.0
Mo ≤0.02 ≤0.02 ≤0.04
As ≤0.001 ≤0.002
Cu ≤0.0002
Fe ≤0.001 ≤0.002
SO4 ≤0.02 0.01
Si ≤0.004 ≤0.04
Water insoluble impurities (%) ≤0.005 ≤0.01
PH 8.5-9 8.5-9
Heavy metal (Pb) ≤0.001 ≤0.002
Cl ≤0.03
Application
1.Intermediate in preparation of tungsten com- pounds, (e.g., phosphotungstate)
2.Used as reagent, fire- proofing fabrics and cellulose, alkaloid precipitant.
3.In organic chemistry, sodium tungstate is used as catalyst for epoxidation of alkenes and oxidation of alcohols into aldehydes or ketones.
4.For the pharmaceutical industry
Packaging
25kg/bag
China
