A7949812
Thiolactic Acid , >97.0%(GC) , 79-42-5
Synonym(s):
2-Mercaptopropionic acid;Thiolactic acid
CAS NO.：79-42-5
Empirical Formula: C3H6O2S
Molecular Weight: 106.14
MDL number: MFCD00004862
EINECS: 201-206-5
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 10-14 °C (lit.) |
| Boiling point: | 102 °C/16 mmHg (lit.)
203-208 °C (lit.) |
| Density | 1.196 g/mL at 25 °C (lit.) |
| vapor pressure | 1.7 hPa (20 °C) |
| refractive index | n |
| FEMA | 3180 | 2-MERCAPTOPROPIONIC ACID |
| Flash point: | 190 °F |
| storage temp. | 2-8°C |
| solubility | 1g/L in organic solvents at 20 ℃ |
| pka | pK1:4.32(0);pK2:10.20(SH) (25°C) |
| form | Liquid |
| color | Clear colorless to slightly yellow |
| Odor | at 0.01 % in propylene glycol. meaty sulfurous roasted |
| PH | 2 (H2O, 20℃)(undiluted) |
| biological source | synthetic |
| Odor Type | sulfurous |
| Water Solubility | MISCIBLE |
| Merck | 14,9340 |
| JECFA Number | 551 |
| BRN | 506218 |
| Cosmetics Ingredients Functions | DEPILATORY ANTIOXIDANT FRAGRANCE HAIR WAVING OR STRAIGHTENING REDUCING |
| InChI | 1S/C3H6O2S/c1-2(6)3(4)5/h2,6H,1H3,(H,4,5) |
| InChIKey | PMNLUUOXGOOLSP-UHFFFAOYSA-N |
| SMILES | CC(S)C(O)=O |
| LogP | 1.15 at 20℃ |
| CAS DataBase Reference | 79-42-5(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Mercaptopropanoic acid(79-42-5) |
| EPA Substance Registry System | Propanoic acid, 2-mercapto- (79-42-5) |
Description and Uses
Depilatory, hair-waving preparations.
Safety
| Symbol(GHS) |  GHS05 |
| Signal word | Danger |
| Hazard statements | H314 |
| Precautionary statements | P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363-P405 |
| PPE | Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter |
| Hazard Codes | C |
| Risk Statements | 34-22 |
| Safety Statements | 26-36/37/39-45-25 |
| RIDADR | UN 2936 |
| WGK Germany | 1 |
| RTECS | UF5250000 |
| TSCA | TSCA listed |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 29309070 |
| Storage Class | 6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| Hazard Classifications | Skin Corr. 1B |
| Toxicity | LD50 orally in Rabbit: 730 mg/kg |
