2-Ethylbutanoic acid
Also known as: 2-Ethylbutyric acid, Diethylacetic acid, 3-Pentanecarboxylic acid, 2-Ethyl-n-butyric acid, FEMA 2429, MFCD00002670, EINECS 201-796-4
2-Ethylbutanoic acid (CAS 88-09-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12O2 and a molecular weight of 116.158 g/mol. Key properties include a melting point of -14 °C, a boiling point of 195.4±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 87.8±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H312 — Harmful in contact with skin, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 88-09-5
- Jingsj CID
- J-32374-0
- Molecular Formula
- C6H12O2
- Molecular Weight
- 116.158 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -14 °C |
|---|---|
| Boiling Point | 195.4±8.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 87.8±0.0 °C |
| Exact Mass | 116.083733 |
| PSA | 37.30000 |
| LogP | 1.66 |
| Vapor Pressure | 0.2±0.8 mmHg at 25°C |
| Refractive Index | 1.425 |
| Additional Property | 18 g/L (20 ºC) |
GHS Safety & Compliance
- H312 — Harmful in contact with skin
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Cruwys JA, et al. Development of a static headspace gas chromatographic procedure for the routine analysis of volatile fatty acids in wastewaters. J Chromatogr A. 2002 Feb 1;945(1-2):195-209. |
|---|
Customs & Trade Information
| HS Code | 2915900090 |
|---|---|
| Summary | 2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Ethylbutanoic acid?
The CAS number of 2-Ethylbutanoic acid is 88-09-5.
What are the molecular formula and molecular weight of 2-Ethylbutanoic acid?
2-Ethylbutanoic acid has molecular formula C6H12O2 and molecular weight 116.158 g/mol.
Is 2-Ethylbutanoic acid hazardous?
2-Ethylbutanoic acid has GHS signal word Warning and hazard statements H312 — Harmful in contact with skin; H315 — Causes skin irritation; H319 — Causes serious eye 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. "2-Ethylbutanoic acid (CAS 88-09-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32374-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.