C 2128 (OTTO) p-Chlorophenol, 98% Cas 106-48-9 - used as main raw material of compounding for medicine, dye, plastic and other industries. C 2128 (OTTO) p-Chlorophenol, 98% Cas 106-48-9 - used in visible-light-induced degradation of 4-chlorophenol in aqueous suspension of pure TiO2.