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6-Methoxy-2-naphthol

Also known as: 2-Hydroxy-6-methoxynaphthalene, 6-Methoxynaphthalen-2-ol, 6-Methoxy-2-naphthalenol, Naproxen EP Impurity H, Naproxen Impurity 8, MFCD00088677

6-Methoxy-2-naphthol (CAS 5111-66-0) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C11H10O2 and a molecular weight of 174.196 g/mol. Key properties include a melting point of 148-152 °C, a boiling point of 336.7±15.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 211.8±5.3 °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.
5111-66-0
Jingsj CID
J-1510254-2
Molecular Formula
C11H10O2
Molecular Weight
174.196 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Melting Point148-152 °C
Boiling Point336.7±15.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point211.8±5.3 °C
Exact Mass174.068085
PSA29.46000
LogP2.63
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.641

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2909500000
Summary2909500000 ether-phenols, ether-alcohol-phenols and their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 6-Methoxy-2-naphthol?

The CAS number of 6-Methoxy-2-naphthol is 5111-66-0.

What are the molecular formula and molecular weight of 6-Methoxy-2-naphthol?

6-Methoxy-2-naphthol has molecular formula C11H10O2 and molecular weight 174.196 g/mol.

Is 6-Methoxy-2-naphthol hazardous?

6-Methoxy-2-naphthol has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

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

Last updated:

How to cite: Jingsj. "6-Methoxy-2-naphthol (CAS 5111-66-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510254-2 (accessed 2026-11-09).

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