4-Chloroformylphthalic anhydride
Also known as: Trimellitic anhydride acid chloride, Trimellitic Anhydride Chloride, TMAC, Anhydrotrimellitic acid chloride, 4-(Chlorocarbonyl)phthalic anhydride, 1,3-dioxo-1,3-dihydroisobenzofuran-5-carbonyl chloride, Benzene-1,2,4-tricarboxylic 1,2-anhydride 4-chloride, Phthalic anhydride, 4-(chloroformyl)-, 5-Isobenzofurancarbonyl chloride, 1,3-dihydro-1,3-dioxo-
4-Chloroformylphthalic anhydride (CAS 1204-28-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H3ClO4 and a molecular weight of 210.571 g/mol. Key properties include a melting point of 66-68 °C(lit.), a boiling point of 391.4±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 186.3±22.2 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1204-28-0
- Jingsj CID
- J-43871-1
- Molecular Formula
- C9H3ClO4
- Molecular Weight
- 210.571 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 66-68 °C(lit.) |
|---|---|
| Boiling Point | 391.4±25.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 186.3±22.2 °C |
| Exact Mass | 209.971985 |
| PSA | 60.44000 |
| LogP | 1.59 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.631 |
| Additional Property | decomposes |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
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-Chloroformylphthalic anhydride?
The CAS number of 4-Chloroformylphthalic anhydride is 1204-28-0.
What are the molecular formula and molecular weight of 4-Chloroformylphthalic anhydride?
4-Chloroformylphthalic anhydride has molecular formula C9H3ClO4 and molecular weight 210.571 g/mol.
Is 4-Chloroformylphthalic anhydride hazardous?
4-Chloroformylphthalic anhydride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 4-Chloroformylphthalic anhydride?
For 4-Chloroformylphthalic anhydride, Downstream Products: Phthalic anhydride, 4-Chlorophthalic anhydride, 3,3',4,4'-Biphenyltetracarboxylic dianhydride.
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-Chloroformylphthalic anhydride (CAS 1204-28-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43871-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.