3-Hydroxybutyric acid
Also known as: 3-Hydroxybutanoic acid, β-Hydroxybutyric acid, DL-3-Hydroxybutyric acid, DL-β-Hydroxybutyric acid, β-Hydroxy-n-butyric acid, 3-Hydroxybutanoate, beta-Hydroxybutyrate
3-Hydroxybutyric acid (CAS 300-85-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H8O3 and a molecular weight of 104.104 g/mol. Key properties include a melting point of 174-175℃, a boiling point of 269.2±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 121.0±19.1 °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.
- 300-85-6
- Jingsj CID
- J-37179-9
- Molecular Formula
- C4H8O3
- Molecular Weight
- 104.104 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 174-175℃ |
|---|---|
| Boiling Point | 269.2±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 121.0±19.1 °C |
| Exact Mass | 104.047340 |
| PSA | 57.53000 |
| LogP | -1.14 |
| Vapor Pressure | 0.0±1.2 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]. Hsu TT, et al. 3-Hydroxybutyric acid interacts with lipid monolayers at concentrations that impair consciousness. Langmuir. 2013 Feb 12;29(6):1948-55. |
Frequently Asked Questions
What is the CAS number of 3-Hydroxybutyric acid?
The CAS number of 3-Hydroxybutyric acid is 300-85-6.
What are the molecular formula and molecular weight of 3-Hydroxybutyric acid?
3-Hydroxybutyric acid has molecular formula C4H8O3 and molecular weight 104.104 g/mol.
Is 3-Hydroxybutyric acid hazardous?
3-Hydroxybutyric 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 3-Hydroxybutyric acid?
For 3-Hydroxybutyric acid, Upstream Products: Butyric acid, 1,2-dichloroethane, Ethyl 3-hydroxybutyrate; Downstream Products: Methyl (R)-(-)-3-hydroxybutyrate, Methyl (S)-(+)-3-hydroxybutyrate, (E)-2-Butenoic 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. "3-Hydroxybutyric acid (CAS 300-85-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37179-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.