Azeotrope-like composition of pentafluoropropane and a perfluorinated fluorocarbon having 5 to 7 carbon atoms or n-methylperfluoromoropholine or n-ethylperfluoromorpholine

Azeotrope-like compositions consisting essentially of pentafluoropropane, and a second component selected from the group consisting of perfluoropentane, perfluorohexane, perfluoroheptane,N-methylperfluoromorpholine and N-ethylperfluoromorpholine;

• wherein
• said compositions of 1,1,2,2,3-pentafluoropropane and perfluoropentane consist essentially of from about 90 to about 50 weight percent 1,1,2,2,3-pentafluoropentane, and from about 10 to about 50 weight percent perfluoropentane, which compositions boil at about 18° C. at about 760 mm Hg;
• said compositions of 1,1,2,2,3-pentafluoropropane and perfluorohexane consist essentially of about 90 to about 50 weight percent of 1,1,2,2,3-pentafluoropropane, and about 10 to about 50 weight percent perfluorohexane which compositions boil at about 23° C. at about 760 mm Hg;
• said compositions of 1,1,2,2,3-pentafluoropropane and perfluoroheptane consist essentially of about 99 to about 75 weight percent 1,1,2,2,3-pentafluoropropane, about 1 to about 25 weight percent perfluoroheptane which compositions boil at about 25° C. at about 760 mm Hg;
• said compositions of 1,1,2,3,3,-pentafluoropropane and N-methylperfluoromorpholine consist essentially of about 99.9 to about 65 weight percent 1,1,2,3,3,-pentafluoropropane, and about 0.1 to about 35 weight percent N-methylperfluoromorpholine which compositions boil at about 36° C. at about 760 mm Hg;
• said compositions of 1,1,2,2,3-pentafluoropropane and N-ethylperfluoromorpholine consist essentially of about 99 to about 75 weight percent 1,1,2,2,3-pentafluoropropane, and about 1 to about 25 weight percent N-ethylperfluoromorpholine which compositions boil at about 25° C. at about 760 mm Hg;
• said compositions of 1,1,2,3,3,-pentafluoropropane and N-ethylperfluoromorpholine consist essentially of about 99.9 to about 75 weight percent 1,1,2,3,3-pentafluoropropane, and about 0.1 to about 25 weight percent N-ethylperfluoromorpholine which compositions boil at about 36.5° C. at about 760 mm Hg;
• said compositions of 1,1,1,3,3-pentafluoropropane and perfluoropentane consist essentially of from about 99 to about 50 weight percent of 1,1,1,3,3-pentafluoropropane, and from about 1 to about 50 weight percent perfluoropentane, which compositions boil at about 10° C. at about 760 mm Hg;
• said compositions of 1,1,1,3,3-pentafluoropropane and perfluorohexane consist essentially of about 99 to about 50 weight percent 1,1,1,3,3-pentafluoropropane, and about 1 to about 50 weight percent perfluorohexane which compositions boil at about 15° C. at about 760 mm Hg;
• said compositions of 1,1,1,2,3-pentafluoropropane and perfluoropentane consist essentially of and from about 90 to about 30 weight percent 1,1,1,2,3-pentafluoropropane, and from about 10 to about 70 weight percent perfluoropentane, which compositions boil at about 15° C. at about 760 mm Hg;
• said compositions of 1,1,1,2,3-pentafluoropropane and perfluorohexane consist essentially of about 99 to about 50 weight percent 1,1,1,2,3-pentafluoropropane, and about 1 to about 50 weight percent perfluorohexane, which compositions boil at about 21° C. at about 760 mm Hg;
• and
• said compositions of 1,1,1,2,3-pentafluoropropane and perfluoroheptane consist essentially to about 99.9 to about 80 weight percent 1,1,1,2,3-pentafluoropropane, and about 0.1 to about 20 weight percent perfluoroheptane which compositions boil at about 22° C. at about 760 mm Hg.