EXTRACTION OF ACETIC AND PROPIONIC ACIDS FROM AQUEOUS NaCl SOLUTIONS BY TRIOCTYLPHOSPHINE OXIDE

摘要

Partition data for transfer of acetic and propionic acids from aqueous (NaCl) solutions to cyclohexane in the absence and in the presence of tri-n-octylphosphine oxide (TOPO) were determined at 30°C. The monomer partition constants, the dimerization constants, and the association constant for TOPO-acid complexes have been evaluated. Salting out parameters were found to increase with increasing (TOPO) level in the organic phase as a result of stabilization of acid by complexing with (TOPO).