3-Hydroxypropionic acid
Also known as: Hydracrylic acid, β-Hydroxypropionic acid, β-Lactic acid, 3-Hydroxypropanoic acid, Propanoic acid, 3-hydroxy-, 2-Deoxyglyceric acid, Ethylene lactic acid, UNII:C4ZF6XLD2X, EINECS 207-974-8
3-Hydroxypropionic acid (CAS 503-66-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H6O3 and a molecular weight of 90.078 g/mol. Key properties include a melting point of <25ºC, a boiling point of 279.7±23.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 137.2±19.1 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 503-66-2
- Jingsj CID
- J-20122-9
- Molecular Formula
- C3H6O3
- Molecular Weight
- 90.078 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | <25ºC |
|---|---|
| Boiling Point | 279.7±23.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 137.2±19.1 °C |
| Exact Mass | 90.031693 |
| PSA | 57.53000 |
| LogP | -1.49 |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.455 |
| Storage Conditions | 2~8℃ |
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 3-Hydroxypropionic acid?
The CAS number of 3-Hydroxypropionic acid is 503-66-2.
What are the molecular formula and molecular weight of 3-Hydroxypropionic acid?
3-Hydroxypropionic acid has molecular formula C3H6O3 and molecular weight 90.078 g/mol.
What are the upstream and downstream products of 3-Hydroxypropionic acid?
For 3-Hydroxypropionic acid, Upstream Products: Acrylic acid, 3-Hydroxypropionitrile, 2-(Acetyloxy)propanoic acid; Downstream Products: 5-methylhex-5-enoic acid, Butyl acrylate, 1,3-Propanediol.
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-Hydroxypropionic acid (CAS 503-66-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20122-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.