title: Determination of partition coefficients of refrigerants by gas liquid chromatographic headspace analysis.
abstract: Gas-water partition coefficients, K(w), and gas-solvent partition coefficients, K(s), have been determined for chlorodifluoromethane and for 1,1,1,3,3,3-hexafluoropropane by headspace analysis, using a very simple experimental procedure. These partition coefficients then yield water-solvent partition coefficients, P(s). Where comparisons can be made there is excellent agreement with literature values for K(w) and P(s). The obtained values of K(s) and P(s) can be used to obtain physicochemical properties, or descriptors, for the refrigerants. Combination of these descriptors with previous equations we have developed enables partition coefficients to be obtained for a host of systems.
authors.affiliation: Department of Chemistry, University College London, 20 Gordon St, London WC1H 0AJ, UK. m.h.abraham@ucl.ac.uk
authors.forename: Michael H
authors.initials: MH
authors.lastname: Abraham
authors.forename: Javier
authors.initials: J
authors.lastname: Gil-Lostes
authors.forename: Stuart
authors.initials: S
authors.lastname: Corr
authors.forename: William E
authors.initials: WE
authors.lastname: Acree
mesh_terms: D005617:Chlorofluorocarbons, Methane / Q000302:isolation & purification*; D002849:Chromatography, Gas / Q000379:methods*; D006843:Hydrocarbons, Chlorinated / Q000302:isolation & purification*
chemical_list: D005617:Chlorofluorocarbons, Methane; D006843:Hydrocarbons, Chlorinated; C432623:1,1,1,3,3,3-hexachloropropane; C009755:fluorocarbon 22