1-Naphthoic acid

1-萘甲酸

Also known as: 1-Naphthalenecarboxylic acid, α-Naphthoic acid, naphthalene-1-carboxylic acid, 1-Naphthylcarboxylic acid, alpha-Naphthoic acid

1-Naphthoic acid (CAS 86-55-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H8O2 and a molecular weight of 172.18 g/mol. It is also known as 1-Naphthalenecarboxylic acid, α-Naphthoic acid and naphthalene-1-carboxylic acid. Key properties include a melting point of 157-160 °C(lit.), a boiling point of 300.0±0.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 164.6±13.9 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
86-55-5
Jingsj CID
J-38247-4
Molecular Formula
C11H8O2
Chinese Name
1-萘甲酸
Molecular Weight
172.18 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point157-160 °C(lit.)
Boiling Point300.0±0.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point164.6±13.9 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1-Naphthoic acid?

The CAS number of 1-Naphthoic acid is 86-55-5.

What are the molecular formula and molecular weight of 1-Naphthoic acid?

1-Naphthoic acid has molecular formula C11H8O2 and molecular weight 172.18 g/mol.

Is 1-Naphthoic acid hazardous?

1-Naphthoic acid has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1-Naphthoic acid (CAS 86-55-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38247-4 (accessed 2026-10-22).

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