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Technical characteristics
- TypeThreonine
Description
| Items | Requirements |
| Appearance | White or sandy beige crystal powder, no obvious purity |
| Specific rotation，，° | -25.0～-29.0 |
| Identification | Corresponds to standard |
| Acidity or alkalinity | 4.5～6.5 |
| Loss on drying, | ≤0.5 |
| Residue on ignition,% | ≤0.5 |
| Heavy metals(Pb),% | ≤0.003 |
| Arsenic (As),% | ≤0.0002 |
| Assay,% | ≥98.5 |
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L-Threonine
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