52-89-1
| Name | L-Cysteine hydrochloride anhydrous |
| CAS | 52-89-1 |
| EINECS(EC#) | 200-157-7 |
| Molecular Formula | C3H8ClNO2S |
| MDL Number | MFCD00064553 |
| Molecular Weight | 157.62 |
| MOL File | 52-89-1.mol |
Chemical Properties
| Appearance | solid |
| Melting point | 180°C |
| alpha | 5.5 º (c=8, 6 N HCL) |
| storage temp. | Store at RT. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| color | White to light brown |
| Odor | odorless |
| Stability: | Stable, but light, moisture and air sensitive. Incompatible with strong oxidizing agents, some metals. |
| biological source | synthetic |
| Optical Rotation | [α]20/D +6.4±0.3°, c = 5% in 5 M HCl |
| Water Solubility | SOLUBLE |
| Sensitive | Hygroscopic |
| Merck | 14,2781 |
| BRN | 3560277 |
| 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 |
| InChIKey | IFQSXNOEEPCSLW-DKWTVANSSA-N |
Safety Data
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P280a-P304+P340-P405-P501a-P261-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | |
| Safety Statements | |
| WGK Germany | 2 |
| RTECS | HA2275000 |
| F | 3-10-23 |
| TSCA | Yes |
| REACH Registrations | Active |
| HS Code | 29309099 |
| Storage Class | 11 - Combustible Solids |
| Safety Profile | |
| Toxicity |