NILE
CHEMICALS
NILE
CHEMICALS
|
SELENIUM POWDER BLACK GR |
|
| Se A.W. 78.96 | |
| Minimum assay | 99.5% |
| Melting point | 220 - 222OC |
| Maximum Limits of Impurities : | |
| Nitric acid insoluble matter | 0.01% |
| Loss on drying | 0.05% |
| Non - volatile matter | 0.05% |
| Nitrogen compounds ( N ) | 0.02% |
| Copper ( Cu ) | 0.01% |
| Iron ( Fe ) | 0.006% |
| Sulphur ( S ) | 0.0015% |
| Tellurium ( Te ) | 0.005% |