NILE
CHEMICALS
NILE
CHEMICALS
|
ZINC OXIDE |
|
| ZnO M.W. 81.38 | |
| Minimum Assay ( by complexometry | |
| on ignited subtances ) | 99% |
| Maximum Limits Of Impurities : | |
| Subtances insoluble in acid and carbonate | passes test |
| Free alkali ( as NaOH ) | 0.12% |
| Chloride ( CI ) | 0.005% |
| Sulphate ( SO4 ) | 0.02% |
| Arsenic ( As ) | 0.0005% |
| Lead ( Pb ) | 0.005% |
| Iron ( Fe ) | 0.001% |
| Subtances reducing KMnO4 ( as O ) | 0.0008% |
| Residue on ignition ( 900OC ) | 1% |