4-Hydroxynicotinic acid
Also known as: 4-Hydroxy-3-pyridinecarboxylic acid, 4-Hydroxypyridine-3-carboxylic acid, 3-Pyridinecarboxylic acid, 4-hydroxy-, 4-Oxo-1,4-dihydropyridine-3-carboxylic acid, 4-keto-1H-pyridine-3-carboxylic acid
4-Hydroxynicotinic acid (CAS 609-70-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H5NO3 and a molecular weight of 139.109 g/mol. Key properties include a boiling point of 312.7±42.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 142.9±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 609-70-1
- Jingsj CID
- J-23324-9
- Molecular Formula
- C6H5NO3
- Molecular Weight
- 139.109 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 312.7±42.0 °C at 760 mmHg |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 142.9±27.9 °C |
| Exact Mass | 139.026947 |
| PSA | 70.42000 |
| LogP | -1.21 |
| Vapor Pressure | 0.0±1.4 mmHg at 25°C |
| Refractive Index | 1.579 |
| Storage Conditions | Keep Cold |
Frequently Asked Questions
What is the CAS number of 4-Hydroxynicotinic acid?
The CAS number of 4-Hydroxynicotinic acid is 609-70-1.
What are the molecular formula and molecular weight of 4-Hydroxynicotinic acid?
4-Hydroxynicotinic acid has molecular formula C6H5NO3 and molecular weight 139.109 g/mol.
What are the upstream and downstream products of 4-Hydroxynicotinic acid?
For 4-Hydroxynicotinic acid, Upstream Products: 4-Chloronicotinic acid, 2-[(2E)-3-(Dimethylamino)-1-methoxy-2-propen-1-ylidene]malononitrile, 2-Chloro-4-methoxynicotinonitrile; Downstream Products: Ethyl 4-hydroxynicotinate, Methyl 4-hydroxynicotinate, 4-Chloronicotinic 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. "4-Hydroxynicotinic acid (CAS 609-70-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23324-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.