Tetrahydromethyl-1,3-isobenzofurandione

甲基四氢邻苯二甲酸酐

Also known as: Methyltetrahydrophthalic anhydride, MTHPA, 4-Methyltetrahydrophthalic anhydride, 3-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride, cis,cis-3-Methyl-4-cyclohexene-1,2-dicarboxylic acid anhydride, Methylcyclohexene-1,2-dicarboxylic Anhydride, 1,3-Isobenzofurandione, 3a,4,5,6-tetrahydro-3a-methyl-1,3-dioxo-, 3a-methyl-5,6-dihydro-4H-2-benzofuran-1,3-dione

Tetrahydromethyl-1,3-isobenzofurandione (CAS 11070-44-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O3 and a molecular weight of 166.174 g/mol. It is also known as Methyltetrahydrophthalic anhydride, MTHPA and 4-Methyltetrahydrophthalic anhydride. Key properties include a boiling point of 306.7±21.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 145.3±19.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
11070-44-3
Jingsj CID
J-13919-3
Molecular Formula
C9H10O3
Chinese Name
甲基四氢邻苯二甲酸酐
Molecular Weight
166.174 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point306.7±21.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point145.3±19.2 °C

Frequently Asked Questions

What is the CAS number of Tetrahydromethyl-1,3-isobenzofurandione?

The CAS number of Tetrahydromethyl-1,3-isobenzofurandione is 11070-44-3.

What are the molecular formula and molecular weight of Tetrahydromethyl-1,3-isobenzofurandione?

Tetrahydromethyl-1,3-isobenzofurandione has molecular formula C9H10O3 and molecular weight 166.174 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Tetrahydromethyl-1,3-isobenzofurandione (CAS 11070-44-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13919-3 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.