Guaiacol
Also known as: 2-Methoxyphenol, o-Methoxyphenol, o-Hydroxyanisole, Catechol monomethyl ether, Methylcatechol, Pyrocatechol monomethyl ether, o-Methylcatechol, 2-Hydroxyanisole, Phenol, 2-methoxy-, Guajacol, Methoxyphenol
Guaiacol (CAS 90-05-1) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C7H8O2 and a molecular weight of 124.14 g/mol. Key properties include a melting point of 26-29 °C(lit.), a boiling point of 207.5±29.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 79.3±24.3 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 90-05-1
- Jingsj CID
- J-48601-1
- Molecular Formula
- C7H8O2
- Molecular Weight
- 124.14 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 26-29 °C(lit.) |
|---|---|
| Boiling Point | 207.5±29.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 79.3±24.3 °C |
| PSA | 29.46000 |
| LogP | 2.11 |
| Additional Property | 4.27 (vs air) |
| Vapor Pressure | 0.2±0.4 mmHg at 25°C |
| Refractive Index | 1.538 |
| Additional Property | 17 g/L (15 ºC) |
| Additional Property | 28℃ |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
Activity & Biological Data
| Target | COX-2 NF-κB |
|---|---|
| Additional Information | [1]. Murakami Y, et al. Re-evaluation of cyclooxygenase-2-inhibiting activity of vanillin and Guaiacol in macrophages stimulated with lipopolysaccharide. Anticancer Res. 2007 Mar-Apr;27(2):801-7. |
Customs & Trade Information
| HS Code | 2909500000 |
|---|---|
| Summary | 2909500000 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 Guaiacol?
The CAS number of Guaiacol is 90-05-1.
What are the molecular formula and molecular weight of Guaiacol?
Guaiacol has molecular formula C7H8O2 and molecular weight 124.14 g/mol.
Is Guaiacol hazardous?
Guaiacol has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Guaiacol?
For Guaiacol, Upstream Products: 2-Methoxyphenylboronic acid, 2-Bromoanisole, 2-iodoanisole; Downstream Products: 3-(2-Methoxyphenyl)propan-1-ol, 4-Iodo-2-methoxyphenol, 2-Iodo-6-methoxyphenol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Guaiacol (CAS 90-05-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48601-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.