2-Oxobutanoic acid
Also known as: 2-Ketobutyric acid, 2-Oxobutyric acid, α-Oxobutyric acid, α-Ketobutyric acid, Propionylformic acid, 2-Oxobutanoic acid
2-Oxobutanoic acid (CAS 600-18-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H6O3 and a molecular weight of 102.089 g/mol. Key properties include a melting point of 30-34 °C(lit.), a boiling point of 177.8±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 65.0±15.2 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 600-18-0
- Jingsj CID
- J-48584-9
- Molecular Formula
- C4H6O3
- Molecular Weight
- 102.089 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 30-34 °C(lit.) |
|---|---|
| Boiling Point | 177.8±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 65.0±15.2 °C |
| Exact Mass | 102.031693 |
| PSA | 54.37000 |
| LogP | -0.71 |
| Vapor Pressure | 0.5±0.6 mmHg at 25°C |
| Refractive Index | 1.427 |
| Storage Conditions | −20°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. CARROLL WR, et al. alpha-Ketobutyric acid as a product in the enzymatic cleavage of cystathionine. J Biol Chem. 1949 Aug;180(1):375-82. |
Customs & Trade Information
| HS Code | 2918300090 |
|---|---|
| Summary | 2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Oxobutanoic acid?
The CAS number of 2-Oxobutanoic acid is 600-18-0.
What are the molecular formula and molecular weight of 2-Oxobutanoic acid?
2-Oxobutanoic acid has molecular formula C4H6O3 and molecular weight 102.089 g/mol.
Is 2-Oxobutanoic acid hazardous?
2-Oxobutanoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2-Oxobutanoic acid?
For 2-Oxobutanoic acid, Upstream Products: (R)-2-Hydroxybutanoic acid, 2-Butynoic acid, 2-Ketoglutaric acid; Downstream Products: Methyl 2-oxobutanoate, (S)-2-Hydroxybutyric acid, L(+)-2-Aminobutyric acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Oxobutanoic acid (CAS 600-18-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48584-9 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.