Name: Tetrahydromethyl-1,3-isobenzofurandione (MTHPA)
Synonyms: MTHPA; AC-METHYL; Loydtbzmmpqjni-Uhfffaoysa-N; 1,3-Isobenzofurandione, 3a,4; Tetrahydromethylphthalic anhydride; Isomethyltetrahydrophthalic anhydride; 4-Methyl Tetrahydrophthalic Anhydride; Tetrahydromethyl1,3isobenzofuranedione; 1,3Isobenzofurandione, tetrahydromethyl; Tetrahydromethyl-1,3-isobenzofurandione; 1,3-Isobenzofurandione, tetrahydromethyl-; Methyltetrahydrophthalic anhydride (MTHPA); Methylcyclohexene-1,2-Dicarboxylicanhydride; 3-Methyl-Delta4-Tetrahydrophthalic Anhydride; Cyclohexene-1,2-dicarboxylic anhydride, methyl-; 3a-methyl-5,6-dihydro-4H-2-benzofuran-1,3-dione; 3a-methyl-5,6-dihydro-4H-isobenzofuran-1,3-dione; 3-Methyl-4-Cyclohexen-1,2-Dicarboxylic Anhydride; 3-Methyl-4-Cyclohexene-1,2-Dicarboxylic Anhydride; 3a,4,5,6-Tetrahydro-3a-methyl-1,3-isobenzofurandione; 3a-Methyl-3a,4,5,6-tetrahydro-2-benzofuran-1,3-dione; 4-methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-quinone; Methyltetrahydrophthalic Anhydride (mixture of isomers); cis,cis-3-Methyl-4-cyclohexene-1,2-dicarboxylic acid anhydride; 3a-methyl-5,6-dihydro-4H-2-benzofuran-1,3-dione
CAS Registry number: 11070-44-3
EINECS：234-290-7
Molecular Formula: C₉H₁₀O₃
Boiling Point: 292.4°C at 760 mmHg
Flash Point: 136.1°C
Refractive index: 1.53
Density: 1.251
Appearance: Colorless to Light yellow clear liquid
Safety Statements: 26-36/37/39-37/39-24-22
Transport：UN 3082 9/PG III