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2-Hydroxyquinoline-4-carboxylic acid

Also known as: 2-Hydroxy-4-quinolincarboxylic acid, 2-Oxo-1,2-dihydroquinoline-4-carboxylic acid, 4-Carboxy-2-hydroxyquinoline, 1,2-DIHYDRO-2-OXOQUINOLINE-4-CARBOXYLIC ACID, AKOS AUF0188, IFLAB-BB F1918-0080, RARECHEM AQ NN 0221, MFCD00023942

2-Hydroxyquinoline-4-carboxylic acid (CAS 84906-81-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H7NO3 and a molecular weight of 189.167 g/mol. Key properties include a melting point of >300ºC, a boiling point of 473.6±30.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 240.2±24.6 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
84906-81-0
Jingsj CID
J-1135663-5
Molecular Formula
C10H7NO3
Molecular Weight
189.167 g/mol
Category
Pharma Intermediates
Last updated
11/3/2026
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Physicochemical Properties

Melting Point>300ºC
Boiling Point473.6±30.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point240.2±24.6 °C
Exact Mass189.042587
PSA70.42000
LogP2.19
Vapor Pressure0.0±1.2 mmHg at 25°C
Refractive Index1.730

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Frequently Asked Questions

What is the CAS number of 2-Hydroxyquinoline-4-carboxylic acid?

The CAS number of 2-Hydroxyquinoline-4-carboxylic acid is 84906-81-0.

What are the molecular formula and molecular weight of 2-Hydroxyquinoline-4-carboxylic acid?

2-Hydroxyquinoline-4-carboxylic acid has molecular formula C10H7NO3 and molecular weight 189.167 g/mol.

Is 2-Hydroxyquinoline-4-carboxylic acid hazardous?

2-Hydroxyquinoline-4-carboxylic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

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

Last updated:

How to cite: Jingsj. "2-Hydroxyquinoline-4-carboxylic acid (CAS 84906-81-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1135663-5 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.