4-Hydroxy-2-methoxybenzoic acid
Also known as: 2-methoxy-4-hydroxy-benzoic acid, 4-Carboxy-3-methoxyphenol, 2-Carboxy-5-hydroxyanisole, 4-HYDROXY-2-METHOXY-BENZOIC ACID, 4-Hydroxy-2-methoxy-benzoic acid, 4-Oxy-2-methoxy-benzoesaeure, AC-1734, OR8922, Pluchoic acid
4-Hydroxy-2-methoxybenzoic acid (CAS 90111-34-5) 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 boiling point of 369.4±27.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 156.8±17.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 90111-34-5
- Jingsj CID
- J-1085954-8
- 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
| Boiling Point | 369.4±27.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 156.8±17.2 °C |
| Exact Mass | 168.042252 |
| PSA | 66.76000 |
| LogP | 1.14 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.586 |
| Storage Conditions | 2-8°C |
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 4-Hydroxy-2-methoxybenzoic acid?
The CAS number of 4-Hydroxy-2-methoxybenzoic acid is 90111-34-5.
What are the molecular formula and molecular weight of 4-Hydroxy-2-methoxybenzoic acid?
4-Hydroxy-2-methoxybenzoic acid has molecular formula C8H8O4 and molecular weight 168.147 g/mol.
What are the upstream and downstream products of 4-Hydroxy-2-methoxybenzoic acid?
For 4-Hydroxy-2-methoxybenzoic acid, Upstream Products: Methyl 4-hydroxy-2-methoxybenzoate, 2-methoxy-4-(phenylmethoxy)benzoic acid, Methyl 2,4-dihydroxybenzoate; Downstream Products: Methyl 2,4-dimethoxybenzoate.
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-Hydroxy-2-methoxybenzoic acid (CAS 90111-34-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1085954-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.