Spectrophotometric determination of Chloranil via charge transfer complex formation


Abstract A sensitive and economical spectrophotometric method has been developed for the determination of chloranil in pure form. The method is based on the reaction of chloranil as π-acceptor with resorcinol as π-donor to give highly coloured complex species in aqueous solution which absorbs maximally at 495nm. Beer's law is obeyed in the concentration range 2-24 µg ml-1 with high apparent molar absorptivity of 10.03×103 l.mol-1 cm-1.