Propionic acid
Also known as: EINECS 201-176-3, MFCD00002756, propionic acid
Propionic acid (CAS 79-09-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H6O2 and a molecular weight of 74.078 g/mol. Key properties include a melting point of −24-−23 °C(lit.), a boiling point of 141.7±3.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 51.7±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H314 — Causes severe skin burns and eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 79-09-4
- Jingsj CID
- J-11448-8
- Molecular Formula
- C3H6O2
- Molecular Weight
- 74.078 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −24-−23 °C(lit.) |
|---|---|
| Boiling Point | 141.7±3.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 51.7±0.0 °C |
| Exact Mass | 74.036781 |
| PSA | 37.30000 |
| LogP | 0.25 |
| Additional Property | 2.55 (vs air) |
| Vapor Pressure | 4.2±0.3 mmHg at 25°C |
| Refractive Index | 1.397 |
| Additional Property | 37 g/100 mL |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H314 — Causes severe skin burns and eye damage
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2915501000 |
|---|
Frequently Asked Questions
What is the CAS number of Propionic acid?
The CAS number of Propionic acid is 79-09-4.
What are the molecular formula and molecular weight of Propionic acid?
Propionic acid has molecular formula C3H6O2 and molecular weight 74.078 g/mol.
Is Propionic acid hazardous?
Propionic acid has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Propionic acid (CAS 79-09-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11448-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.