Measurements of the Mutual Diffusion Coefficients of Gases by the Taylor Method. 7th Report. Measurements on the SF6-air, SF6-N2, SF6-O2, CFC12-N2, CFC12-O2, HCFC22-N2 and HCFC22-O2 Systems.

The mutual diffusion coefficients of SF6 into air and its component gases (N2 and O2) and those of CFC12 and HCFC22 into N2 and O2 have been measured in the temperature range 30∼180°C and at atmospheric pressure by the use of the Taylor dispersion method (The experimental data on the CFC 12-air and HCFC22-air systems have already been given in our 3rd and 4th Reports). For SF6, CFC12 and HCFC22, the mutual diffusion coefficients do not vary in practice on substituting pure N2 or O2 for air.