Sodium Tungstate

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Other name: 
Sodium Tungstate

 

CAS No.: 13472-45-2

Molecular Formula: 

Na2WO4.2H2O

Molecular Weight: 329.87
 

Characters: Colorless crystal or white crystalline powder, will be weathered in dry air, soluble in water, insoluble in ethanol, aqueous solution us weakly basic.

Specifications:

Sodium Tungstate A.R. C.P. Technical grade
Item Spec. Spec. Spec.
Assay % ≥99.5 ≥99.0 ≥98.0
Alkalinity test Pass Pass PH8.5-9
Clarity Pass Pass
Chlorides(Cl) % ≤0.005 ≤0.007
Water insoluble% ≤0.01 ≤0.02 ≤0.05
Sulphates(SO4)% ≤0.01 ≤0.02
Nitrogen compound(N) % ≤0.001 ≤0.004
Mo% ≤0.001 ≤0.005 ≤0.02
Iron(Fe)% ≤0.0005 ≤0.001 ≤0.001
As ≤0.0005 ≤0.0005 ≤0.001
Si% ≤0.04
Cu% ≤0.001
Heav metal(as Pb) ≤0.0005 ≤0.002 ≤0.002

Product Usage: As alkaloid precipitator and fireproofing agent for textiles, as fireproofing agent for textiles

Packaging: 25kg cardboard drum, lined with double-layer plastic bag

Storage Precautions: Protect against fire, sunlight, damange or pollution


Sodium Tungstate


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