2-Propanethiol
ALDRICH/W389755 - natural (US), ≥98%, FG
Synonym: Isopropyl mercaptan
CAS Number: 75-33-2
Empirical Formula (Hill Notation): C3H8S
Molecular Weight: 76.16
MDL Number: MFCD00004863
Linear Formula: (CH3)2CHSH
Product Type: Chemical
| application(s) | flavors and fragrances |
| assay | ≥98% |
| biological source | botanical |
| bp | 57-60 °C (lit.) |
| density | 0.82 g/mL at 25 °C (lit.) |
| documentation | see Safety & Documentation for available documents |
| food allergen | no known allergens |
| grade | FG |
| Halal | |
| Kosher | |
| natural (US) | |
| InChI | 1S/C3H8S/c1-3(2)4/h3-4H,1 |
| InChI key | KJRCEJOSASVSRA-UHFFFAOYSA |
| mp | −131 °C (lit.) |
| organoleptic | earthy; sulfurous |
| Quality Level | 300 ![]() |
| refractive index | n |
| reg. compliance | EU Regulation 1334/2008 & 178/2002 |
| FDA 21 CFR 117 | |
| SMILES string | CC(C)S |
| vapor density | 2.6 (vs air) |
| vapor pressure | 455 mmHg ( 37.8 °C) |
| Symbol | ![]() ![]() GHS02,GHS07,GHS09 |
| Signal word | Danger |
| Hazard statements | H225 - H317 - H410 |
| Precautionary statements | P210 - P233 - P240 - P273 - P280 - P303 + P361 + P353 |
| WGK Germany | WGK 3 |
| Flash Point(F) | -23.8 °F - closed cup |
| Flash Point(C) | -31 °C - closed cup |
| Purity | ≥98% |
| bp | 57-60 °C (lit.) |
| mp | −131 °C (lit.) |
| Density | 0.82 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| FEMA Number | 3897 |
| UNSPSC | 12164502 |




