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Items | Specification |
Appearance | White crystals or crystalline powder |
State of solution | ≥95.0% |
Heavy metals(Pb) | ≤20ppm |
Arsenic | ≤2ppm |
Other amino acids | Chromatographically not detectable |
Loss on drying | ≤0.5% |
pH | 1.7~3.0 |
Assay | ≥95.0% |














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