- Herbal Medicine[6]
- Plant Extract[6]
- Flavor Tea[6]
- Black Tea[1]
- Other Food & Beverage[5]
- Pharmaceutical[6]
- Organic Acid[6]
- Food Additives[6]
- Other Chemicals[2]
- Chloride[1]
- Carbonate[1]
- Healthcare Supplement[6]
- Royal Jelly[4]
- Daily Chemicals[6]
- Other Organic Chemical[1]
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- Chemical Auxiliary Agent[6]
- Bottles[3]
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- Agrochemicals & Pesticides[5]
- Chemical Reagents[1]
- Contact Person : Ms. Wang Helen
- Company Name : Qingdao Fraken International Trading Co., Ltd.
- Tel : 86-532-83899718
- Fax : 86-532-83623236
- Address : Shandong,Qingdao,Room 1005, 220 Yan'an Three Road
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D-Cysteine hydrochloride monohydrate
D-Cysteine hydrochloride monohydrate
CAS# :32443-99-5 Assay:99.8% M.F.:C3H7NO2S.HCI.H2O M.W.:175.64
Technical index | Standards | Test results |
Characters | White crystals or crystalline powder | conforms |
Identification | Should show respond | conforms |
Specific rotation | -5.5°~ -7.00° | -6.36 ° |
Chloride(Cl) | Not more than 0.04 % | Less than 0.05 % |
Sulfate(SO4) | Not more than 0.030 % | Less than 0.030 % |
Iron(Fe) | Not more than 20ppm | Less than 20ppm |
Heavy metals(Pb) | Not more than 10ppm | Less than 10ppm |
Loss on drying | 8.0-12.0% | 10.79 % |
Residue on ignition | Not more than 0.10 % | 0.08% |
Other amino acid | Not more than 0.5% | Less than 0.5% |
Ammonium(NH4) | Not more than 0.01% | Less than 0.01% |
Melting point | 106 to 110°C | 108.0 |
The aqua’s clearness Degree and color | Smaller and yellow No.3 of smaller NO.2 of muddy degree ,color degree | conforms |
Assay | 98.5 ~ 101.0 % (dried basis) | 99.31 % |
Conclusion | Comply with EP5 | |
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D-Cysteine hydrochloride monohydrate
