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4-Methoxyphenol

Also known as: Mequinol, Hydroquinone monomethyl ether, p-Hydroxyanisole, p-Methoxyphenol, MEHQ, 4-Hydroxyanisole, Hydroquinone methyl ether, Leucodine B, Monomethylhydroquinone

4-Methoxyphenol (CAS 150-76-5) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C7H8O2 and a molecular weight of 124.137 g/mol. Key properties include a melting point of 56 °C, a boiling point of 243.0±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 120.8±4.8 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
150-76-5
Jingsj CID
J-42951-6
Molecular Formula
C7H8O2
Molecular Weight
124.137 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Melting Point56 °C
Boiling Point243.0±0.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point120.8±4.8 °C
Exact Mass124.052429
PSA29.46000
LogP1.31
Additional Property4.3 (vs air)
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.535
Additional Property40 g/L (25 ºC)

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning
  • H302 — Harmful if swallowed
  • H317 — May cause an allergic skin reaction
  • H319 — Causes serious eye irritation
  • H412 — Harmful to aquatic life with long lasting effects

Activity & Biological Data

Additional Information[1]. Callender VD, et al. Postinflammatory hyperpigmentation: etiologic and therapeutic considerations. Am J Clin Dermatol. 2011 Apr 1;12(2):87-99.

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 4-Methoxyphenol?

The CAS number of 4-Methoxyphenol is 150-76-5.

What are the molecular formula and molecular weight of 4-Methoxyphenol?

4-Methoxyphenol has molecular formula C7H8O2 and molecular weight 124.137 g/mol.

Is 4-Methoxyphenol hazardous?

4-Methoxyphenol has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 4-Methoxyphenol?

For 4-Methoxyphenol, Upstream Products: 4-Allyloxyanisole, 4-Bromoanisole, 4-Iodoanisole; Downstream Products: 5-[(4-Methoxyphenoxy)methyl]-4-phenyl-4H-1,2,4-triazole-3-thiol.

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-Methoxyphenol (CAS 150-76-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42951-6 (accessed 2026-11-09).

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