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連絡先担当者 Mr. allen
608 Room Chuangxin Bld. No.25 Goxin First Road, Xian
Product Name: L-Cysteine hydrochloride monohydrate
Structure Formula: . H*0
Molecular Formula: C3H7NO2S. HCl. H2O
Molecular Weight: **5.*4
CAS No: [********6]
Characteristics: White crystals or crystalline powder; Strongly
acid taste.
Quality Standards: USP*8, AJI*2.
| Item | Specifications | |
| USP*8 | AJI*2 | |
| Appearance | White crystals or crystalline powder; strongly acid taste. | |
| Identification | Infrared Absorption | **- |
| Specific optical rotation | *5.6 °- *8.9 ° | *5.5 °- *7.0 ° |
| State of solution (Transmittance) | **- | ≥ *8.0% clear and colorless |
| Chloride (Cl) | **- | *9.****0.*9% |
| Ammonium(NH4) | **- | ≤ 0. **2% |
| Sulfate | ≤ 0. *3 % | ≤ 0. **0% |
| Iron | ≤ 0. **3 % | *0ppm |
| Heavy Metals (as Pb), | ≤ 0.*0 *5% | ≤ *0ppm |
| Arsenic (as As), | **- | ≤ 1ppm |
| Other amino acids | **- | Not detected |
| Organic volatile impurities | Meets the requirement | **- |
| Loss on drying, | ***2 % | 8.***2 % |
| Residue on ignition, | c | ≤ 0.1 0 % |
| Assay | *8.****1.5 % | 9 9.***0 0.5 % |
| pH value | **- | 1.**2.0 |
| Organic volatile impurities | Meets the requirement | **- |
| Chromatographic purity | 0.5% max Individual impurity, 2% max total | **- |
