Applications
4,4′-Dimethylbiphenyl is used in the preparation of biphenyl-4,4’-dicarboxylic acid, which acts as a monomer utilized in the synthesis of linear long chain polymer through polycondensation reaction. It is used to prepare 4-(4′-methylphenyl)benzaldehyde by selective photoxygenation reaction using 9-phenyl-10-methylacridinium perchlorate as a catalyst under visible light irradiation.

Solubility
Insoluble in water.

Notes
Incompatible with strong oxidizing agents.