3-Hydroxybutyric acid

3-羟基丁酸

Also known as: 3-Hydroxybutanoic acid, β-Hydroxybutyric acid, DL-3-Hydroxybutyric acid, DL-β-Hydroxybutyric acid, 3-OH-butyric acid, (±)-3-Hydroxybutanoic acid, DL-3-Hydroxybutanoic acid, beta-Hydroxy-n-butyric acid, RARECHEM AL BO 1231

3-Hydroxybutyric acid (CAS 625-71-8) 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. It is also known as 3-Hydroxybutanoic acid, β-Hydroxybutyric acid and DL-3-Hydroxybutyric acid. Key properties include a melting point of 49 - 50ºC, 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. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
625-71-8
Jingsj CID
J-1992220-5
Molecular Formula
C4H8O3
Chinese Name
3-羟基丁酸
Molecular Weight
104.104 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point49 - 50ºC
Boiling Point269.2±0.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point121.0±19.1 °C

Frequently Asked Questions

What is the CAS number of 3-Hydroxybutyric acid?

The CAS number of 3-Hydroxybutyric acid is 625-71-8.

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.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3-Hydroxybutyric acid (CAS 625-71-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992220-5 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.