Description
Production:
White crystalline powder; odorless, acidic; soluble in water (solubility 1.6g/L), insoluble in acetone and ether. PI6.0, MP is 205-207 degrees C; specific rotation [alpha] 25D + 18 degrees (0.5-2.0 mg/ml, H2O); [alpha] 25D + 14.6 degrees (0.5-2.0 mg/ml, 5 mol/L HCl).
CAS No. 638-23-3
Molecular formula: C5H9NO4S
Molecular weight: 179.19
EINECS No. 211-327-5
Specification：
| Item | Limit | Result |
| Appearance | White crystalline powder | Conforms |
| Specific rotation[a]D20° | -33.5°～-36.5° | -34.8 |
| State of solution | ≥98.0% | 98.5% |
| Chloride(Cl) | ≤0.04% | 0.019% |
| Ammonium(NH4) | ≤0.02% | 0.017% |
| Sulfate(SO4) | ≤0.02% | 0.018% |
| Iron(Fe) | ≤30PPm | 8PPm |
| Heavy metals(Pb) | ≤10PPm | 7PPm |
| Arsenic(As2O3) | ≤1PPm | 0.13PPm |
| Other amino acids | Conforms | Conforms |
| Loss on drying | ≤0.30% | 0.17% |
| Residue on ignition | ≤0.1% | 0.037% |
| Assay | 98.5～101.0% | 99.5% |
| PH | 2.0～3.5 | 2.85 |
| MESH | 100%THRU 80MESH | Conforms |
Application：
It is mainly used for the treatment of diseases such as chronic bronchitis and bronchial asthma, such as thick sputum, difficulty in coughing, and obstruction of the trachea.
Package：
25kg/barrel
Storage：
Warehouse low temperature ventilation and drying
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