Diphenylmethane is an organic compound with the formula (c6h5)2ch2. The compound consists of methane wherein two hydrogen atoms are replaced by two phenyl groups.

4-Tert-Butylcatechol (TBC) is an organic chemical compound which is a derivative of catechol. It is added as a stabilizer and an inhibitor of polymerization to butadiene, styrene, vinyl acetate and other reactive monomer streams