Collect. Czech. Chem. Commun. 1979, 44, 2202-2210

Identification of impurities in benzyl butyl phthalate by gas-liquid chromatography and mass spectrometry

Jan Novrocík and Marta Novosadová

Research Institute of Coal Tar Chemistry, Urx Works, 757 27 Valašské Meziříčí


The impurities present in benzyl butyl phthalate of Monsanto, Belgium, and in benzyl butyl phthalate prepared by a modified procedure employing gaseous ammonia instead of triethylamine were identified by GLC-MS. Columns appropriate for the GLC analysis of this plasticizer were selected and their advantages and disadvantages discussed, and the optimum conditions for complete, rapid routine analysis of benzyl butyl phthalate were established. The side reactions proceeding during the preparation of benzyl butyl phthalate are discussed based on the identification of the impurities present.