4,4'-Diisocyanato-3,3'-dimethylbiphenyl

4,4'-二异氰酸基-3,3'-二甲基联苯

Also known as: 4,4'-Diisocyanato-3,3'-dimethyl-1,1'-biphenyl, 3,3'-Dimethyl-4,4'-biphenylene diisocyanate, 3,3'-Bitolylene-4,4'-diisocyanate, o-Tolidine diisocyanate, TODI, 1-isocyanato-4-(4-isocyanato-3-methylphenyl)-2-methylbenzene

4,4'-Diisocyanato-3,3'-dimethylbiphenyl (CAS 91-97-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H12N2O2 and a molecular weight of 264.279 g/mol. It is also known as 4,4'-Diisocyanato-3,3'-dimethyl-1,1'-biphenyl, 3,3'-Dimethyl-4,4'-biphenylene diisocyanate and 3,3'-Bitolylene-4,4'-diisocyanate. Key properties include a melting point of 70-72°C, a boiling point of 384.8±42.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 158.8±33.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

91-97-4

Jingsj CID

J-1103797-8

Molecular Formula

C₁₆H₁₂N₂O₂

Chinese Name

4,4'-二异氰酸基-3,3'-二甲基联苯

Molecular Weight

264.279 g/mol

Category

Organic Acids

Last updated

8/21/2026