4-tert-Butylphthalic anhydride

4-叔丁基邻苯二甲酸酐

Also known as: 5-tert-butyl-2-benzofuran-1,3-dione, 5-tert-butylisobenzofuran-1,3-dione, 5-(tert-butyl)isobenzofuran-1,3-dione, 4-tert-butylphthalic acid anhydride, 5-(1,1-dimethylethyl)-1,3-isobenzofurandione, 4-t-butylphthalic anhydride, 4-tert-butyl-phthalsaeure-anhydrid

4-tert-Butylphthalic anhydride (CAS 32703-79-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H12O3 and a molecular weight of 204.22200 g/mol. It is also known as 5-tert-butyl-2-benzofuran-1,3-dione, 5-tert-butylisobenzofuran-1,3-dione and 5-(tert-butyl)isobenzofuran-1,3-dione. Key properties include a melting point of 70-75 °C(lit.), a boiling point of 136 °C / 2mmHg, a density of 1.206 g/cm3 and a flash point of 149.9ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

32703-79-0

Jingsj CID

J-42887-9

Molecular Formula

C₁₂H₁₂O₃

Chinese Name

4-叔丁基邻苯二甲酸酐

Molecular Weight

204.22200 g/mol

Category

Organic Acids

Last updated

8/21/2026