Items | Standard |
Character | White or almost white crystalline powder |
Identification | Positive |
Residue on ignition | ≤0.5% |
Heavy metals | NMT 20ppm |
Arsenic | NMT 5ppm |
Sulphated ash | NMT 0.1% |
Loss on drying | NMT 0.5% |
Total impurities | NMT 1.5% |
Assay(HPLC) | 97%-103% |