The results are summarized in Table 4 below. TABLE 4 After 50% After 50% Compounds Initial Initial Leak Leak Delta wt % A/wt % B Psia kPa Psia kPa P % C4F9OCH3/HFC-263fa (42.4° C.) 40.8/59.2 14.68 101.22 14.68 101.22 0.0% 20/80 14.43 99.49 14.24 98.18 1.3% 10/90 14.09 ...