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Best Price Sodium Tungstate

Name Specification %
Excellent Grade Refined Grade Crude Grade
WO3 ≥69.0 ≥69.0 ≥68.0
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 matter ≤0.005 ≤0.01  
PH 8.5-9 8.5-9  
Metal(Pb) ≤0.001 ≤0.002  
Cl   ≤0.03  
(1) Sodium Tungstate is mainly used in the manufacture of metal tungsten, tungstic acid and tungstate, as well as dyes, pigments, inks, electroplating, etc.
 
(2) Sodium Tungstate is also used as a fire retardant and catalyst for fabrics and cellulose.
 

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