5-Carboxyvanillic acid
Also known as: 1,3-Benzenedicarboxylic acid, 4-hydroxy-5-methoxy-, 4-Hydroxy-5-methoxyisophthalic acid, 3-Carboxy-4-hydroxy-5-methoxybenzoic acid, 4-Hydroxy-5-methoxybenzene-1,3-dicarboxylic acid, 5-Carboxy-vanillic acid, 4-Hydroxy-5-methoxy-isophthalsaeure, 5-Carboxyvanillate, 4-Hydroxy-5-methoxyisophthalate
5-Carboxyvanillic acid (CAS 2134-91-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H8O6 and a molecular weight of 212.15600 g/mol. Key properties include a boiling point of 455.6ºC at 760mmHg, a density of 1.549g/cm3 and a flash point of 188.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2134-91-0
- Jingsj CID
- J-1402027-0
- Molecular Formula
- C9H8O6
- Molecular Weight
- 212.15600 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 455.6ºC at 760mmHg |
|---|---|
| Density | 1.549g/cm3 |
| Flash Point | 188.2ºC |
| Exact Mass | 212.03200 |
| PSA | 104.06000 |
| LogP | 0.79720 |
| Vapor Pressure | 4.29E-09mmHg at 25°C |
| Refractive Index | 1.629 |
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 5-Carboxyvanillic acid?
The CAS number of 5-Carboxyvanillic acid is 2134-91-0.
What are the molecular formula and molecular weight of 5-Carboxyvanillic acid?
5-Carboxyvanillic acid has molecular formula C9H8O6 and molecular weight 212.15600 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Carboxyvanillic acid (CAS 2134-91-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1402027-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.