2-Hydroxy-2-methylbutanoic acid
Also known as: 2-Hydroxy-2-methylbutyric acid, 2-Methyl-2-hydroxybutanoic acid, 2-Ethyl-2-hydroxypropionic acid, 2-Hydroxy-2-methyl-n-butyric acid, Butanoic acid, 2-hydroxy-2-methyl-
2-Hydroxy-2-methylbutanoic acid (CAS 3739-30-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H10O3 and a molecular weight of 118.131 g/mol. Key properties include a melting point of 73-75 °C(lit.), a boiling point of 237.6±13.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 111.8±16.3 °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.
- 3739-30-8
- Jingsj CID
- J-1993312-1
- Molecular Formula
- C5H10O3
- Molecular Weight
- 118.131 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 73-75 °C(lit.) |
|---|---|
| Boiling Point | 237.6±13.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 111.8±16.3 °C |
| Exact Mass | 118.062996 |
| PSA | 57.53000 |
| LogP | 0.18 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.460 |
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]. Dekant W, et al. Biotransformation of MTBE, ETBE, and TAME after inhalation or ingestion in rats and humans. Res Rep Health Eff Inst. 2001 May;(102):29-71; discussion 95-109. |
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-Hydroxy-2-methylbutanoic acid?
The CAS number of 2-Hydroxy-2-methylbutanoic acid is 3739-30-8.
What are the molecular formula and molecular weight of 2-Hydroxy-2-methylbutanoic acid?
2-Hydroxy-2-methylbutanoic acid has molecular formula C5H10O3 and molecular weight 118.131 g/mol.
Is 2-Hydroxy-2-methylbutanoic acid hazardous?
2-Hydroxy-2-methylbutanoic 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-Hydroxy-2-methylbutanoic acid?
For 2-Hydroxy-2-methylbutanoic acid, Upstream Products: Bromoform, 3,6-Dimethyl-4-octyne-3,6-diol, 2-Hydroxy-2-methylbutanenitrile; Downstream Products: Butanoic acid, 2-methylene-, Tiglic acid, Angelic 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-Hydroxy-2-methylbutanoic acid (CAS 3739-30-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993312-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.