L-Cysteine monohydrochloride
- Product NameL-Cysteine monohydrochloride
- CAS52-89-1
- CBNumberCB6694980
- MFC3H8ClNO2S
- MW157.62
- EINECS200-157-7
- MDL NumberMFCD00064553
- MOL File52-89-1.mol
- MSDS FileSDS
Chemical Properties
| Melting point | 180°C |
| alpha | 5.5 º (c=8, 6 N HCL) |
| FLAVIS Number | 17.032 | L-Cysteine hydrochloride |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| color | White to light brown |
| Odor | odorless |
| biological source | synthetic |
| optical activity | [α]20/D +6.4±0.3°, c = 5% in 5 M HCl |
| Water Solubility | SOLUBLE |
| Sensitive | Hygroscopic |
| Merck | 14,2781 |
| BRN | 3560277 |
| Stability | Stable, but light, moisture and air sensitive. Incompatible with strong oxidizing agents, some metals. |
| Cosmetics Ingredients Functions | HAIR WAVING OR STRAIGHTENING REDUCING ANTIOXIDANT HAIR CONDITIONING |
| Cosmetic Ingredient Review (CIR) | L-Cysteine monohydrochloride (52-89-1) |
| InChI | 1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1 |
Safety
| Symbol(GHS) |
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| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P280a-P304+P340-P405-P501a-P261-P305+P351+P338 | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | HA2275000 | |||||||||
| F | 3-10-23 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29309013 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Toxicity | LD50 intraperitoneal in mouse: 1250mg/kg | |||||||||
| NFPA 704: |
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