Type: | Cysteine |
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Chemical Character: | Acidity |
Appearance: | Powder |
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Test Item | Specification |
Appearance | White crystals or crystalline powder |
Identification | Meet the requirements |
Specific rotation[α]D20 | +8.3°~ +9.5° |
State of solution | ≥ 95.0% |
Chloride(Cl) | ≤ 0.2% |
Ammonium(NH4) | ≤ 0.02% |
Sulfate(SO4) | ≤ 0.030% |
Iron(Fe) | ≤ 10 ppm |
Heavy metals(Pb) | ≤ 10 ppm |
Other amino acids | ≤ 1.0% |
Loss on drying | ≤ 0.5% |
Residue on ignition | ≤ 0.1% |
Assay | 98.0 ~ 101.0% |
Ph | 4.5 ~ 5.5 |