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| · Add.: |
Houfu Industrial Zone, Taoyuan Town, Jinzhou City, Hebei Prov., China. |
| ·Contact: |
Liu Jimao(Factory director) |
| · Email: |
kitty-qiao@163.com |
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trans-4-Hydroxy-L-proline |
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Structural formula: 
Molecular formula: C5H9NO3;
Molecular weight: 131.13
Cas No: [51-35-4]
Appearance: white crystal or white powder
Packing & storage: In 25kg drum lined with two-layer plastic bag; stored in tightly clsoed containers with room temperature.
Useful life: 2 years.
Quality standard: Japan
Ajinomoto
92
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Test item |
Spec. (AJI92) |
Spec. (USP24) |
Spec.(CP2000) |
Appearance |
white crystal or white powder |
Identification |
Measured by infrared absorption spectrometer |
Specific rotation |
-74.0º- -77.0º |
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Solubility |
≥ 98.0% |
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Chlorine content |
≤ 0.020% |
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| Ammonia salt (NH4 ) |
≤ 0.020% |
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| Sulphate (SO4 ) |
≤ 0.020% |
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| Iron salt (Fe) |
≤ 10PPm |
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| Heavy metal (Pb) |
≤ 10PPm |
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| Arsenic salt (As2O3 ) |
≤ 1PPm |
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Other amino acids |
Meet the standard |
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Drying loss |
≤ 0.40% |
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Residue on ignition |
≤ 0.1% |
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Assay |
98.5% - 101.5% |
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Acidity |
--- |
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Organic volatiles and impurities |
--- |
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