1-Naphthoic acid
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. 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. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 86-55-5
- Jingsj CID
- J-38247-8
- Molecular Formula
- C11H8O2
- Molecular Weight
- 172.18 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 157-160 °C(lit.) |
|---|---|
| Boiling Point | 300.0±0.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 164.6±13.9 °C |
| Exact Mass | 172.052429 |
| PSA | 37.30000 |
| LogP | 3.13 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.673 |
| Stability | Stable. Incompatible with strong bases, strong oxidizing agents. |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2916399090 |
|---|---|
| Summary | 2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
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 and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 1-Naphthoic acid?
For 1-Naphthoic acid, Upstream Products: 1-naphthalenemethanol, 1-Bromonaphthalene, Carbon dioxide; Downstream Products: 5,6,7,8-Tetrahydronaphthalene-1-carboxylic acid, 1,2,3,4-Tetrahydronaphthalene-1-carboxylic acid, 5-Bromonaphthalen-1-amine.
Data compiled from public chemical databases such as PubChem 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-38247-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.