Homophthalic acid
Also known as: 2-(Carboxymethyl)benzoic acid, 2-Carboxyphenylacetic acid, alpha-Carboxy-o-toluic acid, Benzeneacetic acid, 2-carboxy-, o-Carboxybenzeneacetic acid, TOLUENE-2,ALPHA-DICARBOXYLIC ACID, Homophthalic diacid, o-Carboxyphenylacetic acid, α-Carboxy-o-toluic acid
Homophthalic acid (CAS 89-51-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H8O4 and a molecular weight of 180.157 g/mol. Key properties include a melting point of 178-182 °C(lit.), a boiling point of 389.5±17.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 203.5±17.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 89-51-0
- Jingsj CID
- J-1160421-0
- Molecular Formula
- C9H8O4
- Molecular Weight
- 180.157 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 178-182 °C(lit.) |
|---|---|
| Boiling Point | 389.5±17.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 203.5±17.4 °C |
| Exact Mass | 180.042252 |
| PSA | 74.60000 |
| LogP | 1.18 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.600 |
| Additional Property | 12 g/L (20 ºC) |
Customs & Trade Information
| HS Code | 2917399090 |
|---|---|
| Summary | 2917399090 aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Homophthalic acid?
The CAS number of Homophthalic acid is 89-51-0.
What are the molecular formula and molecular weight of Homophthalic acid?
Homophthalic acid has molecular formula C9H8O4 and molecular weight 180.157 g/mol.
What are the upstream and downstream products of Homophthalic acid?
For Homophthalic acid, Upstream Products: Indene, 2-(2-Bromophenyl)acetamide, 2-Iodobenzoic acid; Downstream Products: 1-Oxo-1,2-dihydro-4-isoquinolinecarboxylic acid, Isoquinolin-1(2H)-one, Isoquinoline-1,3(2H,4H)-dione.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Homophthalic acid (CAS 89-51-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1160421-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.