 NILE 
CHEMICALS
 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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