4-Chlorophthalic anhydride
Also known as: 4-Chlorophthalic acid anhydride, 5-Chloro-2-benzofuran-1,3-dione, 5-Chloroisobenzofuran-1,3-dione, Chlorophthalic anhydride, 1,3-Isobenzofurandione, 5-chloro-, 4-CHLOROPHTHALIC ANHYDRIDE
4-Chlorophthalic anhydride (CAS 118-45-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H3ClO3 and a molecular weight of 182.561 g/mol. Key properties include a melting point of 96°C, a boiling point of 299.8±13.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 142.4±18.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 118-45-6
- Jingsj CID
- J-43162-9
- Molecular Formula
- C8H3ClO3
- Molecular Weight
- 182.561 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 96°C |
|---|---|
| Boiling Point | 299.8±13.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 142.4±18.8 °C |
| Exact Mass | 181.977066 |
| PSA | 43.37000 |
| LogP | 2.19 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.627 |
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Chlorophthalic anhydride?
The CAS number of 4-Chlorophthalic anhydride is 118-45-6.
What are the molecular formula and molecular weight of 4-Chlorophthalic anhydride?
4-Chlorophthalic anhydride has molecular formula C8H3ClO3 and molecular weight 182.561 g/mol.
What are the upstream and downstream products of 4-Chlorophthalic anhydride?
For 4-Chlorophthalic anhydride, Upstream Products: 4-Chlorophthalic acid, 4-Chloro-1,2-dimethylbenzene, Sodium hydrogen 4-chlorophthalate; Downstream Products: 4-Fluorophthalic anhydride, 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride, 4-Bromophthalic anhydride.
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 anhydride (CAS 118-45-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43162-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.