CAS: 73-32-5
Molecular formula: C6H13NO2
Molecular weight: 131.17
Appearance: White crystalline flakes or crystalline powder.
Properties: slightly bitter, odorless. The sublimation temperature is 168-170 °C, and it melts and decomposes at about 284 °C. The pH value is 5.5-7.0 in 10% aqueous solution, and the chemical properties are stable. There is almost no loss in food cooking and processing. Soluble in water (4.03g/100ml, 20℃), slightly soluble in hot ethanol, soluble in dilute mineral acid and alkaline solution, insoluble in cold ethanol and ether.
| Testing Item | Standard | Result |
| Appearance | White crystals or crystalline powder | conforms |
| Assay/% | 98.5%~101% | 99.6 |
| Specific Rotation | +38.9~+41.8° | +40.5° |
| Identification (Infrared Absorption) | Corresponding to Reference Spectrum | conforms |
| Residue on Ignition/% | ≤0.30 | 0.06 |
| Loss on Drying | ≤0.3 | 0.07 |
| Chloride (Cl)/% | ≤0.05 | 0.016 |
| Iron (Fe)/% | ≤0.0030 | 0.0009 |
| Sulfate ( SO4)/% | ≤0.03 | 0.015 |
| Heavy Metal(Pb)/% | ≤0.0015 | 0.0008 |
| Arsenic(As)/% | ≤0.0003 | ≤0.0001 |
| Cadmium (Cd)/% | ≤0.0001 | 0.00004 |
| Mercury (Hg)/% | ≤0.0001 | 0.00003 |
| Total Plate Count(cfu/g) | ≤1000 | 69 |
| Yeast and Molds(cfu/g) | ≤100 | 11 |
| E.Coli | Negative in 10g | conforms |
| Staphylococcus Aureus | Negative in 10g | conforms |
| Salmonella | Negative in 10g | conforms |
| Loss on Drying/% | ≤0.30 | 0.17 |
| PH | 5.5~7.0 | 6.2 |
