Sodium Tungstate Dihydrate, Reagent A.C.S.

Assay:99.0-101.0%
Na2WO4 · 2H2O
MAXIMUM ALLOWABLE 
Insoluble matter: 0.01%
Titrable free base: 0.02 meq/g
Chloride (Cl): 0.005%
Molybdenum (Mo): 0.001%
Sulfate (SO4): 0.01%
Heavy metals and iron (as Pb): 0.001%
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