NILE CHEMICALS

    SILICOTUNGSTIC  ACID  GR

SPECIFICATION

H4SiW12O40xH2O   M.W.  2878.29  
Minimum assay 99.5%
Maximum Limits of Impurities :  
Chloride  ( CI ) 0.002%
Sulphate ( SO4 ) 0.005%
Total Nitrogen ( N ) 0.002%
Heavy metals ( as Pb ) 0.002%
Iron  ( Fe ) 0.001%
sodium ( Na ) 0.02%
Potassium ( K ) 0.02%
Loss on ignition  ( 750OC ) 16.00%
 ( As a reagent for pptn and    
determination of alkaloids )  
   

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