Stable compositions of trifluoroethylene

1. A composition comprising trifluoroethylene and 1,2,3,3,3-pentafluoropropene, wherein the weight ratio trifluoroethylene/1,2,3,3,3-pentafluoropropene is from 5/95 to 95/5.

2. The composition of claim 1 , wherein the weight ratio trifluoroethylene/1,2,3,3,3-pentafluoropropene is from 10/90 to 80/20.

3. The composition of claim 1 , wherein the weight ratio trifluoroethylene/1,2,3,3,3-pentafluoropropene is from 20/80 to 50/50.

4. The composition of claim 1 , wherein 1,2,3,3,3-pentafluoropropene comprises the Z or E isomer or a combination of both.

5. The composition of claim 1 , wherein the composition comprises an inert gas.

6. The composition of claim 1 , wherein the composition comprises a polymerization inhibitor.

7. The composition of claim 1 , wherein the composition is either liquid or compressed gas.

8. A container comprising the composition of claim 7 , wherein the pressure within the container is from 0.35 to 4.14 MPa.

9. The container of claim 8 , wherein when the composition is a compressed gas, the pressure within the container is from 0.45 to 1.75 MPa.

10. The container of claim 9 , wherein the pressure within the container is from 0.55 to 1.4 MPa and the composition weight ratio trifluoroethylene/1,2,3,3,3-pentafluoropropene is from 20/80 to 80/20.

11. The container of claim 8 , wherein when the composition is a liquid in equilibrium with a gas, the pressure within the container is from 0.55 to 1.75 MPa.

12. The container of claim 11 , wherein the pressure within the container is from 0.65 to 1.4 MPa, and the composition weight ratio trifluoroethylene/1,2,3,3,3-pentafluoropropene is from 15/85 to 60/40.

13. The composition of claim 1 , wherein the composition comprises at least one compound selected from the group consisting of 2,3,3,3-tetrafluoropropene (HF0-1234yf), 1,3,3,3-tetrafluoropropene (HF0-1234ze), 1,1,1,2,3-pentafluoropropane (HFC-245eb), 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,1,1,2,2,3-hexafluoropropane (HFC-236cb), 1,1,1,2,3,3-hexafluoropropane (HFC-236ea), 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,1,2,2,3,3-heptafluoropropane (HFC-227ca), 1,1,2,3,3-pentafluoropropene (HF0-1225yc), 1,1,3,3,3-pentafluoropropene (HF0-1225zc), methane, ethane, propane, trifluoromethane (HFC-23), 1,1,1-trifluoroethane (HFC-143a), 1,1,1,2-tetrafluoroethane (HFC-134), 1,1,1,2-tetrafluoroethane (HFC-134a), hexafluoropropene (HFC-1216), HFC-254eb, 1,1,1-trifluoropropene (HF0-1243zf), and 1,1,1,3-tetrafluoropropane (HFC-254fb).

14. The composition of claim 13 , wherein the total content of said at least one compound is lower than 1 wt % based on the total weight of the composition.

15. A process for preparing a composition according to claim 1 , comprising dehydrofluorinating 1,1,1,2,3,3-hexafluoropropane.

16. The process of claim 15 , wherein the dehydrofluorination step is performed either in the gas phase in the presence of a catalyst or in the liquid phase using an alkaline medium.

17. The process of claim 16 , wherein when the process is performed in the liquid phase, 1,1,1,2,3,3-hexafluoropropane is dispersed in the alkaline medium using a mechanical agitating device.

18. The process of claim 16 , wherein the effluent gas from the dehydrofluorination step is purified.

19. The process of claim 16 , wherein the gas is compressed.

20. The process of claim 16 , wherein when the process is performed in the liquid phase, the alkaline mixture comprises a mixture of water and potassium hydroxide wherein potassium hydroxide is present in an amount of between 58 and 86% by weight.