Testing Item | Standard | Result |
Assay (on dry basis) | White or almost white, crystalline powder or small, colourless granule | conforms |
Appearance | 98.5% ~ 101.0% | 100.0% |
Identification |
A: IR absorption; C: Reaction of nitrates |
conforms |
Appearance of solution | Clear, not more intense than Y7 | conforms |
PH | 6.8 ~ 7.5 | 7.2 |
Loss on drying | ≤0.5% | 0.08% |
Chloride | ≤0.06% | < 0.06% |
Sulphated ash | ≤0.1% | 0.02% |
Heavy metals | ≤10 ppm | < 10 ppm |