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3,5-Dimethoxyphenol

Also known as: Phloroglucinol dimethyl ether, 1-Hydroxy-3,5-dimethoxybenzene, Taxicatigenin, Phenol, 3,5-dimethoxy-, O,O-dimethyl-phloroglucinol, Phloroglucinol Impurity 24, 3,5-Dimethoxyphenol, 97%, 3,5-Dimethoxyphenol, 98%, 3,5-Dimethoxyphenol, 99%, NSC 70955

3,5-Dimethoxyphenol (CAS 500-99-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C8H10O3 and a molecular weight of 154.163 g/mol. Key properties include a melting point of 40-43 °C(lit.), a boiling point of 294.1±20.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 78.3±0.0 °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.
500-99-2
Jingsj CID
J-42099-5
Molecular Formula
C8H10O3
Molecular Weight
154.163 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Melting Point40-43 °C(lit.)
Boiling Point294.1±20.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point78.3±0.0 °C
Exact Mass154.062988
PSA38.69000
LogP1.43
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.523

GHS Safety & Compliance

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

Activity & Biological Data

Additional Information[1]. Grobosch T, et al. Fatal poisoning with Taxus baccata: quantification of paclitaxel (taxol A), 10-deacetyltaxol, baccatin III, 10-deacetylbaccatin III, cephalomannine (taxol B), and 3,5-dimethoxyphenol in body fluids by liquid chromatography-tandem mass spectrometry. J Anal Toxicol. 2012 Jan-Feb;36(1):36-43.

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 3,5-Dimethoxyphenol?

The CAS number of 3,5-Dimethoxyphenol is 500-99-2.

What are the molecular formula and molecular weight of 3,5-Dimethoxyphenol?

3,5-Dimethoxyphenol has molecular formula C8H10O3 and molecular weight 154.163 g/mol.

Is 3,5-Dimethoxyphenol hazardous?

3,5-Dimethoxyphenol 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 3,5-Dimethoxyphenol?

For 3,5-Dimethoxyphenol, Upstream Products: 1,3,5-Trimethoxybenzene, Phloroglucinol, Dimethyl sulfate; Downstream Products: 3,5-Dimethoxybenzylamine, Citropten, 2'-Hydroxy-4',6'-dimethoxyacetophenone.

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

Last updated:

How to cite: Jingsj. "3,5-Dimethoxyphenol (CAS 500-99-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42099-5 (accessed 2026-11-09).

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