Tetrahydrophthalic anhydride
四氢邻苯二甲酸酐
Also known as: 3a,4,7,7a-Tetrahydro-2-benzofuran-1,3-dione, 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-, δ4-Tetrahydrophthalic anhydride, THPA (ambiguous)
Tetrahydrophthalic anhydride (CAS 26266-63-7) 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. It is also known as 3a,4,7,7a-Tetrahydro-2-benzofuran-1,3-dione, 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro- and δ4-Tetrahydrophthalic anhydride. Key properties include a boiling point of 305.6±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 148.3±25.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 26266-63-7
- Jingsj CID
- J-51417-8
- Molecular Formula
- C8H8O3
- Chinese Name
- 四氢邻苯二甲酸酐
- Molecular Weight
- 152.147 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 305.6±42.0 °C at 760 mmHg |
|---|---|
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 148.3±25.1 °C |
Frequently Asked Questions
What is the CAS number of Tetrahydrophthalic anhydride?
The CAS number of Tetrahydrophthalic anhydride is 26266-63-7.
What are the molecular formula and molecular weight of Tetrahydrophthalic anhydride?
Tetrahydrophthalic anhydride has molecular formula C8H8O3 and molecular weight 152.147 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetrahydrophthalic anhydride (CAS 26266-63-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-51417-8 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.