2-Hydroxy-3-methylbutanoic acid
Also known as: 2-Hydroxy-3-methylbutyric acid, 2-Hydroxyisovaleric acid, alpha-Hydroxyisovaleric acid, DL-2-Hydroxy-3-methylbutanoic acid, DL-2-Hydroxyisovaleric acid, DL-alpha-Hydroxyisovaleric acid, 3-Methyl-2-hydroxybutyric acid, 2-Oxyisovaleric acid, 2-Hydroxyisopentanoic acid
2-Hydroxy-3-methylbutanoic acid (CAS 4026-18-0) 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 86-87ºC(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.
- 4026-18-0
- Jingsj CID
- J-17023-0
- 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 | 86-87ºC(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 | 1.455 |
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]. Pan YM, et al. Improved procedure for the analysis of gamma-hydroxybutyrate and ethylene glycol in whole blood. J Anal Toxicol. 2001 Jul-Aug;25(5):328-32. |
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-3-methylbutanoic acid?
The CAS number of 2-Hydroxy-3-methylbutanoic acid is 4026-18-0.
What are the molecular formula and molecular weight of 2-Hydroxy-3-methylbutanoic acid?
2-Hydroxy-3-methylbutanoic acid has molecular formula C5H10O3 and molecular weight 118.131 g/mol.
Is 2-Hydroxy-3-methylbutanoic acid hazardous?
2-Hydroxy-3-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-3-methylbutanoic acid?
For 2-Hydroxy-3-methylbutanoic acid, Upstream Products: 1,1-Bis(trimethylsilyloxy)-3-methyl-1-butene, 3-Methyl-2-oxobutanoic acid, 1,4-Dioxane; Downstream Products: 2-Hydroxyisobutyric acid, acetic acid, 2-Methyl-1-propanol.
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-3-methylbutanoic acid (CAS 4026-18-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17023-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.