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ITEM | SPECIFICATION | RESULT |
Appearance | Almost white crystal or crystalline powder | Almost white crystal or crystalline powder |
Identification | 1.2(+) | Complies |
Relative materials % | ≤0.1 | Complies |
Melting point % | 194.0~202.0 | 198.9~199.8 |
pH | 2.3~2.7 | 2.43 |
Clarity of solution | ≤1# | Complies |
Iron % | ≤0.005 | Complies |
Loss on drying % | ≤0.5 | 0.05 |
Residue on ignition % | ≤0.1 | 0.05 |
Heavy metals μg/g | ≤10 | <10 |
Assay % | ≥99.0 | 99.6% |