2-Hydroxy-3-methoxybenzoic acid
Also known as: 3-Methoxysalicylic acid, o-Vanillic acid, Guaiacol-3-carboxylic acid, 2-Hydroxy-3-methoxybenzoic acid, 3-Methoxy-2-hydroxybenzoic acid
2-Hydroxy-3-methoxybenzoic acid (CAS 877-22-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H8O4 and a molecular weight of 168.147 g/mol. Key properties include a melting point of 147-150 °C(lit.), a boiling point of 315.7±27.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 131.6±17.2 °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.
- 877-22-5
- Jingsj CID
- J-48027-3
- Molecular Formula
- C8H8O4
- Molecular Weight
- 168.147 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 147-150 °C(lit.) |
|---|---|
| Boiling Point | 315.7±27.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 131.6±17.2 °C |
| Exact Mass | 168.042252 |
| PSA | 66.76000 |
| LogP | 1.98 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.586 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2918990090 |
|---|---|
| Summary | 2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Hydroxy-3-methoxybenzoic acid?
The CAS number of 2-Hydroxy-3-methoxybenzoic acid is 877-22-5.
What are the molecular formula and molecular weight of 2-Hydroxy-3-methoxybenzoic acid?
2-Hydroxy-3-methoxybenzoic acid has molecular formula C8H8O4 and molecular weight 168.147 g/mol.
Is 2-Hydroxy-3-methoxybenzoic acid hazardous?
2-Hydroxy-3-methoxybenzoic 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 2-Hydroxy-3-methoxybenzoic acid?
For 2-Hydroxy-3-methoxybenzoic acid, Upstream Products: o-Vanillin, 2,3-Dimethoxybenzoic acid, 3-Methoxybenzoic acid; Downstream Products: 2-Methoxy-4-nitrophenol, Carbon dioxide, Guaiacol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Hydroxy-3-methoxybenzoic acid (CAS 877-22-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48027-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.