(R)-2-Hydroxybutanoic acid
Also known as: (R)-2-Hydroxybutanoic acid, (2R)-2-Hydroxybutanoic acid, (R)-2-Hydroxybutyric acid, D-2-Hydroxybutyric acid, D-(-)-alpha-Hydroxybutyric acid, D-alpha-Hydroxybutyric acid, (R)-alpha-Hydroxybutyric acid, (-)-2-Hydroxybutyric acid, (-)-alpha-Hydroxybutyric acid, MFCD01318570
(R)-2-Hydroxybutanoic acid (CAS 20016-85-7) 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 104.10 g/mol. Key properties include a melting point of 50-54ºC, a boiling point of 238.3ºC at 760 mmHg, a density of 1.195g/cm3 and a flash point of 112.2ºC. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H318 — Causes serious eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20016-85-7
- Jingsj CID
- J-1992403-9
- Molecular Formula
- C4H8O3
- Molecular Weight
- 104.10 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 50-54ºC |
|---|---|
| Boiling Point | 238.3ºC at 760 mmHg |
| Density | 1.195g/cm3 |
| Flash Point | 112.2ºC |
| Exact Mass | 104.04700 |
| PSA | 57.53000 |
| Vapor Pressure | 0.00759mmHg at 25°C |
| Refractive Index | 1.455 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Landaas S, et al. The formation of 2-hydroxybutyric acid in experimental animals. Clin Chim Acta. 1975 Jan 6;58(1):23-32. |
|---|
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 (R)-2-Hydroxybutanoic acid?
The CAS number of (R)-2-Hydroxybutanoic acid is 20016-85-7.
What are the molecular formula and molecular weight of (R)-2-Hydroxybutanoic acid?
(R)-2-Hydroxybutanoic acid has molecular formula C4H8O3 and molecular weight 104.10 g/mol.
Is (R)-2-Hydroxybutanoic acid hazardous?
(R)-2-Hydroxybutanoic acid has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H318 — Causes serious eye damage; H335 — May cause respiratory irritation.
What are the upstream and downstream products of (R)-2-Hydroxybutanoic acid?
For (R)-2-Hydroxybutanoic acid, Upstream Products: 2-Oxobutanoic acid, (R)-2-Aminobutyric acid, Formic Acid; Downstream Products: (R)-1,2-Butanediol, 2-Oxobutanoic acid, Methyl (R)-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. "(R)-2-Hydroxybutanoic acid (CAS 20016-85-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992403-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.