Azeotrope-like composition of hexafluoropropane, hexafluoropropene and hydrogen fluoride

1. An azeotropic or azeotrope-like composition consisting essentially of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and hydrogen fluoride.

2. The azeotropic or azeotrope-like composition of claim 1 having from about 1 to about 10 wt % hydrogen fluoride, from about 1 to about 10 wt % hexafluoropropene, and from about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane, based on the total weight of the azeotropic or azeotrope-like composition, and a boiling point of about from 0° C. to about 60° C. at a pressure of about 17 psia to about 125 psia.

3. The azeotropic or azeotrope-like composition of claim 1 having from about 1.5 to about 8.4 wt % hydrogen fluoride, from about 3.5 to about 4.9 wt % hexafluoropropene, and from about 88.1 to about 93.6 wt % of 1,1,1,2,3,3-hexafluoropropane, based on the total weight of the azeotropic or azeotrope-like composition, and a boiling point selected from the group consisting of about 0° C. at a pressure of about 17±3 psia, about 25° C. at a pressure of about 44±5 psia, and about 60° C. at a pressure of about 123±5 psia.

4. The azeotropic or azeotrope-like composition of claim 1 having from about 1 to about 10 wt % hydrogen fluoride, from about 1 to about 10 wt % hexafluoropropene, and from about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane, based on the total weight of the azeotropic or azeotrope-like composition, and a boiling point of about 0° C. at a pressure of about 17±3 psia.

5. The azeotropic or azeotrope-like composition of claim 1 having from about 1.5 to about 10 wt % hydrogen fluoride, from about 1 to about 10 wt % hexafluoropropene, and from about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane, based on the total weight of the azeotropic or azeotrope-like composition, and a boiling point of about 25° C. at a pressure of about 44±5 psia.

6. The azeotropic or azeotrope-like composition of claim 1 having from about 2 to about 10 wt % hydrogen fluoride, from about 1 to about 10 wt % hexafluoropropene, and from about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane, based on the total weight of the azeotropic or azeotrope-like composition, and a boiling point of about 0° C. at a pressure of about 60° C. at a pressure of about 123±5 psia.

7. A method of forming an azeotropic or azeotrope-like composition comprising adding an effective amount of hydrogen fluoride and hexafluoropropene to 1,1,1,2,3,3-hexafluoropropane.

8. The method of claim 7 wherein about 1 to about 10 wt % hydrogen fluoride and about 1 to about 10 wt % hexafluoropropene is added to about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane resulting in an azeotrope having a boiling point of about from 0° C. to about 60° C. at a pressure of about 17 psia to about 125 psia.

9. The method of claim 7 wherein about 1.5 to about 8.4 wt % hydrogen fluoride and about 3.5 to about 4.9 wt % hexafluoropropene is added to about 88.1 to about 93.6 wt % of 1,1,1,2,3,3-hexafluoropropane resulting in an azeotrope having a boiling point selected from the group consisting of about 0° C. at a pressure of about 17±3 psia, about 25° C. at a pressure of about 44±5 psia, and about 60° C. at a pressure of about 123±5 psia.

10. The method of claim 7 wherein about 1 to about 10 wt % hydrogen fluoride and about 1 to about 10 wt % hexafluoropropene is added to about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane resulting in an azeotrope having a boiling point of about 0° C. at a pressure of about 17±3 psia.

11. The method of claim 7 wherein about 1.5 to about 10 wt % hydrogen fluoride and about 1 to about 10 wt % hexafluoropropene is added to about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane resulting in an azeotrope having a boiling point of about 25° C. at a pressure of about 44±5 psia.

12. The method of claim 7 wherein about 2 to about 10 wt % hydrogen fluoride and about 1 to about 10 wt % hexafluoropropene is added to about 80 to about 98 wt % of 1,1,1,2,3,3-hexafluoropropane resulting in an azeotrope having a boiling point of about 60° C. at a pressure of about 123±5 psia.