2-ethyl-2-hydroxybutanoic acid
Also known as: 2-ethyl-2-hydroxybutyric acid, 2-ethyl-2-hydroxybutanoate, 2-hydroxy-2-ethylbutanoic acid, 2-hydroxy-2-ethylbutyric acid, 2,2-diethylglycolic acid, diethoxalic acid, Butanoic acid, 2-ethyl-2-hydroxy-, MFCD00004183
2-ethyl-2-hydroxybutanoic acid (CAS 3639-21-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12O3 and a molecular weight of 132.15800 g/mol. Key properties include a melting point of 78-82ºC, a boiling point of 251.3ºC at 760mmHg, a density of 1.103g/cm3 and a flash point of 120.1ºC. 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.
- 3639-21-2
- Jingsj CID
- J-7732-7
- Molecular Formula
- C6H12O3
- Molecular Weight
- 132.15800 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 78-82ºC |
|---|---|
| Boiling Point | 251.3ºC at 760mmHg |
| Density | 1.103g/cm3 |
| Flash Point | 120.1ºC |
| Exact Mass | 132.07900 |
| PSA | 57.53000 |
| LogP | 0.62210 |
| Refractive Index | 1.4691 (estimate) |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2918199090 |
|---|---|
| Summary | 2918199090 other carboxylic acids with alcohol 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-ethyl-2-hydroxybutanoic acid?
The CAS number of 2-ethyl-2-hydroxybutanoic acid is 3639-21-2.
What are the molecular formula and molecular weight of 2-ethyl-2-hydroxybutanoic acid?
2-ethyl-2-hydroxybutanoic acid has molecular formula C6H12O3 and molecular weight 132.15800 g/mol.
Is 2-ethyl-2-hydroxybutanoic acid hazardous?
2-ethyl-2-hydroxybutanoic 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-ethyl-2-hydroxybutanoic acid?
For 2-ethyl-2-hydroxybutanoic acid, Upstream Products: Iodoethane, Diethyl oxalate, Dimethyl oxalate; Downstream Products: 3-Pentanone, ethyl 2-ethyl-2-hydroxybutanoate.
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-ethyl-2-hydroxybutanoic acid (CAS 3639-21-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-7732-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.