MEASUREMENT OF ACTIVITY-COEFFICIENTS AT INFINITE DILUTION OF CHLORINATED SOLVENTS IN COMMERCIAL POLYETHYLENE-GLYCOL ETHERS

Among the suggested scrubbing liquids, alkylene glycol dialkyl ethers are especially suitable because of their favorable properties. Activit y coefficients at infinite dilution are reported in the literature onl y for single absorption liquids, but generally in industrial applicati ons stabilized mixtures of these substances are used. In this work two commercial products were considered: Genosorb 300 and Genosorb 1843, mixtures of polyethylene glycol dimethyl ethers and of polyethylene gl ycol dibutyl ethers, respectively. Gas-liquid chromatography was chose n for the es:perimental determination of the activity coefficients at infinite dilution, in the temperature range between 42 and 90 degrees C, of commonly used organic solvents, belonging in particular to the h alocarbon class.