4-Chlorophthalic acid
Also known as: 4-chloro-1,2-benzenedicarboxylic acid, 1,2-benzenedicarboxylic acid, 4-chloro-, 4-chlorobenzene-1,2-dicarboxylic acid, phthalic acid, 4-chloro-, NSC 57755, 4-chloranylphthalic acid
4-Chlorophthalic acid (CAS 89-20-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H5ClO4 and a molecular weight of 200.576 g/mol. Key properties include a melting point of 285°C, a boiling point of 399.5±27.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 195.4±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 89-20-3
- Jingsj CID
- J-1111376-1
- Molecular Formula
- C8H5ClO4
- Molecular Weight
- 200.576 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 285°C |
|---|---|
| Boiling Point | 399.5±27.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 195.4±23.7 °C |
| Exact Mass | 199.987640 |
| PSA | 74.60000 |
| LogP | 1.98 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.630 |
| Additional Property | 0.1-0.5 g/100 mL at 21.5 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 4-Chlorophthalic acid?
The CAS number of 4-Chlorophthalic acid is 89-20-3.
What are the molecular formula and molecular weight of 4-Chlorophthalic acid?
4-Chlorophthalic acid has molecular formula C8H5ClO4 and molecular weight 200.576 g/mol.
What are the upstream and downstream products of 4-Chlorophthalic acid?
For 4-Chlorophthalic acid, Upstream Products: 4,5-dichlorophthalic anhydride, 4-Chloro-1,2-dimethylbenzene, Carbon; Downstream Products: Trimellitic acid, 4-Hydroxyphthalic acid, 4-Chloro-5-nitrophthalimide.
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-Chlorophthalic acid (CAS 89-20-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1111376-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.