Ethyl 2-mercaptopropionate
Also known as: 2-Mercaptopropionic Acid Ethyl Ester, Ethyl thiolactate, Ethyl 2-sulfanylpropanoate, Ethyl 2-thiolpropanoate, Propanoic acid, 2-mercapto-, ethyl ester, FEMA 3279, MFCD00040233
Ethyl 2-mercaptopropionate (CAS 19788-49-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H10O2S and a molecular weight of 134.19700 g/mol. Key properties include a boiling point of 40-41 °C1 mm Hg(lit.), a density of 1.031 g/mL at 25 °C(lit.) and a flash point of 58.3 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 19788-49-9
- Jingsj CID
- J-18250-3
- Molecular Formula
- C5H10O2S
- Molecular Weight
- 134.19700 g/mol
- Category
- Organic Acids
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 40-41 °C1 mm Hg(lit.) |
|---|---|
| Density | 1.031 g/mL at 25 °C(lit.) |
| Flash Point | 58.3 °C |
| Exact Mass | 134.04000 |
| PSA | 65.10000 |
| LogP | 0.86780 |
| Vapor Pressure | 1.38mmHg at 25°C |
| Refractive Index | n20/D 1.449(lit.) |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Ethyl 2-mercaptopropionate?
The CAS number of Ethyl 2-mercaptopropionate is 19788-49-9.
What are the molecular formula and molecular weight of Ethyl 2-mercaptopropionate?
Ethyl 2-mercaptopropionate has molecular formula C5H10O2S and molecular weight 134.19700 g/mol.
Is Ethyl 2-mercaptopropionate hazardous?
Ethyl 2-mercaptopropionate has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Ethyl 2-mercaptopropionate (CAS 19788-49-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18250-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.