Phosphotungstic Acid Hydrate


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Phosphotungstic Acid
CAS No. : 12501-23-4

   
Synonyms : Phosphowolframic Acid; tungstophosphoric Acid

Chemical Formula : H3PO4*12WO3*xH2O
Formula Weight : 2898.17
Appearance : Off-White crystalline powder
Turning yellow on exposure to light Assay (with Cinchonine) : 65.0% to 70.0%
Insoluble Matter : 0.10% maximum
Chloride (Cl) : 0.30% maximum
Nitrate (NO3) : 0.05% maximum
Sulfate (SO4) : 0.20% maximum
Ammonium (NH4) : 0.05% maximum
Heavy Metals (as Pb) : 0.05% maximum
Iron (Fe) : 0.02% maximum

 

 

 
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