PREPARATION AND GAS-CHROMATOGRAPHIC CHARACTERIZATION OF 3-BROMO-4-(4-METHYLBENZYLOXY)AZOBENZENE STATIONARY-PHASE

The synthesis of 3-bromo-4-(4-methylbenzyloxy) azobenzene (BMBOA) and its use as a stationary phase in packed columns are described. Chromat ographic characteristics such as column efficiency, polarity (McReynol ds constants) and operating temperature range were studied. Retention factors, specific retention volumes and activity coefficients for alco hols, esters, ketones, aromatic hydrocarbons and n-alkanes were determ ined. Phenols and 2,3, and 4-chlorobenzyl chlorides were separated on the new phase. Based on experimental data some assumptions were made o n the possible types of intermolecular forces between solute and solve nt.