Sodium Tungstate

Product Category: Other Chemicals

CAS No.: 13472-45-2
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.
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
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

Certifications: ISO
Brand Name: SELLWELL
Price Terms: EX-Work,FOB,CIF
Payment Terms: T/T, Western-Union, MoneyGram, L/C
Minimum Order: 100KG
Delivery Time: 7 days