Sodium Tungstate

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Other name: 
Sodium Tungstate

 

CAS No.: 13472-45-2

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

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