
| Item | Specification |
| CAS no. | 3184-13-2 |
| Description | White crystals or crystalline powder, characteristic taste, very soluble in water |
| Identification (Infrared Absorption) | Corresponding to Reference Spectrum |
| Solubility (H2O, g/100g) | 54.5 (20℃), 67.7 (40℃), 83 (60℃) Very soluble in water, practically insoluble in ethanol |
| State of solution | Clear and colorless |
| Light transmittance | ≥98.0% |
| Specific rotation [α]D20°C | +23.0°~+25.0° |
| Assay | 99.0% ~ 101.0% |
| pH value | 4.0 ~ 6.0 |
| Loss on drying | ≤0.2% |
| Residue on Ignition | ≤0.1% |
| Bulk density | ≥0.5g/ml |
| Sulfate | ≤0.02% |
| Ammonium | ≤0.02% |
| Iron | ≤10ppm |
| Heavy metals | ≤10ppm |
| Lead | ≤1ppm |
| Cadmium | ≤0.5ppm |
| Mercury | ≤0.1ppm |
| Arsenic | ≤0.5ppm |
| Other amino acids | Chromatographically not detectable |
| Residue of Methanol | ≤200ppm |
| Particle size | ≥95% Pass Through 20 mesh |
| Total Plate Count | ≤1000cfu/g |
| Yeasts & molds | ≤100cfu/g |
| E.coli | Negative/1g |
| Salmonella | Negative/10g |
| Storage condition | Preserve in tight containers at controlled room temperature |
| Packing | 25kg/drum |
| Shelf life | 2 years |



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