3,4,5,6-Tetrahydrophthalic anhydride
Also known as: 1-Cyclohexene-1,2-dicarboxylic anhydride, 4,5,6,7-Tetrahydroisobenzofuran-1,3-dione, 4,5,6,7-Tetrahydro-2-benzofuran-1,3-dione, Cyclohexene-1,2-dicarboxylic anhydride, Δ1-Tetrahydrophthalic anhydride, 3,4,5,6-THPA
3,4,5,6-Tetrahydrophthalic anhydride (CAS 2426-02-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H8O3 and a molecular weight of 152.147 g/mol. Key properties include a melting point of 69-73 °C(lit.), a boiling point of 302.3±11.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 146.1±16.5 °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.
- 2426-02-0
- Jingsj CID
- J-49116-7
- Molecular Formula
- C8H8O3
- Molecular Weight
- 152.147 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 69-73 °C(lit.) |
|---|---|
| Boiling Point | 302.3±11.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 146.1±16.5 °C |
| Exact Mass | 152.047348 |
| PSA | 43.37000 |
| LogP | 1.25 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.534 |
| Additional Property | REACTS |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H318 — Causes serious eye damage
- H334 — May cause allergy or asthma symptoms if inhaled
- H412 — Harmful to aquatic life with long lasting effects
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 3,4,5,6-Tetrahydrophthalic anhydride?
The CAS number of 3,4,5,6-Tetrahydrophthalic anhydride is 2426-02-0.
What are the molecular formula and molecular weight of 3,4,5,6-Tetrahydrophthalic anhydride?
3,4,5,6-Tetrahydrophthalic anhydride has molecular formula C8H8O3 and molecular weight 152.147 g/mol.
Is 3,4,5,6-Tetrahydrophthalic anhydride hazardous?
3,4,5,6-Tetrahydrophthalic 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 3,4,5,6-Tetrahydrophthalic anhydride?
For 3,4,5,6-Tetrahydrophthalic anhydride, Upstream Products: 3,6-Dihydrophthalic anhydride, Hexahydrophthalic anhydride, Phthalic acid; Downstream Products: 3,4,5,6-Tetrahydrophthalimide, 1,2-Bis(trifluoromethyl)benzene, Hexahydrophthalic 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. "3,4,5,6-Tetrahydrophthalic anhydride (CAS 2426-02-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49116-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.