Trimellitic anhydride
Also known as: 1,2,4-Benzenetricarboxylic anhydride, 4-Carboxyphthalic anhydride, Benzene-1,2,4-tricarboxylic anhydride, 1,3-dioxo-1,3-dihydro-2-benzofuran-5-carboxylic acid, 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylic acid, Anhydrotrimellitic acid, Anhydrosepedonin, Trimellitic acid anhydride
Trimellitic anhydride (CAS 552-30-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H4O5 and a molecular weight of 192.125 g/mol. Key properties include a melting point of 163-166 °C(lit.), a boiling point of 470.6±28.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 201.3±17.5 °C. It is classified under GHS with signal word Danger and hazard statements H317 — May cause an allergic skin reaction, H318 — Causes serious eye damage and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 552-30-7
- Jingsj CID
- J-1352448-6
- Molecular Formula
- C9H4O5
- Molecular Weight
- 192.125 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 163-166 °C(lit.) |
|---|---|
| Boiling Point | 470.6±28.0 °C at 760 mmHg |
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 201.3±17.5 °C |
| Exact Mass | 192.005875 |
| PSA | 80.67000 |
| LogP | 1.28 |
| Additional Property | 6.6 (vs air) |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.662 |
| Additional Property | DECOMPOSES |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H318 — Causes serious eye damage
- H334 — May cause allergy or asthma symptoms if inhaled
- H335 — May cause respiratory irritation
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 Trimellitic anhydride?
The CAS number of Trimellitic anhydride is 552-30-7.
What are the molecular formula and molecular weight of Trimellitic anhydride?
Trimellitic anhydride has molecular formula C9H4O5 and molecular weight 192.125 g/mol.
Is Trimellitic anhydride hazardous?
Trimellitic anhydride has GHS signal word Danger and hazard statements H317 — May cause an allergic skin reaction; H318 — Causes serious eye damage; H334 — May cause allergy or asthma symptoms if inhaled.
What are the upstream and downstream products of Trimellitic anhydride?
For Trimellitic anhydride, Upstream Products: Trimellitic acid, 1,2,4-TRIMETHYL BENZENE, trimethyl 1,2,4-benzenetricarboxylate; Downstream Products: 6-Carboxyfluorescein, 5-Carboxyfluorescein, 6-Carboxy-X-rhodamine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Trimellitic anhydride (CAS 552-30-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1352448-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.