ITEM | STANDARD |
Characteristics | White crystallized power |
Content | ≥ 99.5% |
Melting point | 121-124ºC |
Loss on drying | ≤ 0.5% |
Sulfate | ≤ 0.1% |
Burnt Residue | ≤ 300 ppm |
Chlorides | ≤ 0.02% |
Heavy metals (As Pb) | ≤ 10 ppm |
Arsenic | ≤ 0.0003% |
Lead | ≤ 5 ppm |
Mercury | ≤ 1 ppm |
Oxidisable substances | passing test |
Carbonisable substances | Y5 |
Colour of solution | B9 |