Composition comprising HF and E-3,3,3-trifluoro-1-chloropropene
View Patent ↗An azeotropic or quasi-azeotropic composition including hydrogen fluoride, E-3,3,3-trifluoro-1-chloropropene and optionally one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also, a preferred azeotropic or quasi-azeotropic composition including hydrogen fluoride, E-3,3,3-trifluoro-1-chloropropene, and optionally one or more compounds selected from among 1,1,1,2,2-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, 3,3,3-trifluoro-2-chloropropene, 1,3,3,3-tetrafluoropropene, trifluoropropyne, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3-pentafluoropropene and 2-chloro,1,1,1,2-tetrafluoropropane.
1. An azeotropic or quasi-azeotropic composition consisting essentially of hydrogen fluoride and E-3,3,3-trifluoro-1-chloropropene, wherein the composition has from 5% to 70% by weight of hydrogen fluoride and from 95% to 30% by weight of E-3,3,3-trifluoro-1-chloropropene.
2. The composition as claimed in claim 1 , wherein the composition is azeotropic.
3. The composition as claimed in claim 1 , wherein the composition is quasi-azeotropic, wherein the pressure difference between the pressure at the dew point and the pressure at the bubble formation point is less than or equal to 5%, on the basis of the pressure at the bubble formation point.
4. The composition as claimed in claim 1 , wherein the boiling point of this composition is between 0 and 40° C. at a pressure of between 0.9 and 4 bar absolute.
5. The composition as claimed in claim 1 , wherein the composition has from 10% to 65% by weight of hydrogen fluoride and from 90% to 35% by weight of E-3,3,3-trifluoro-1-chloropropene, the boiling point of this composition is between 0 and 40° C. at a pressure of between 0.9 and 4 bar absolute.
6. The composition as claimed in claim 1 , wherein the composition consists of hydrogen fluoride and E-3,3,3-trifluoro-1-chloropropene.
7. The composition as claimed in claim 6 , wherein the composition is azeotropic.
8. The composition as claimed in claim 6 , wherein the composition is quasi-azeotropic, wherein the pressure difference between the pressure at the dew point and the pressure at the bubble formation point is less than or equal to 5%, on the basis of the pressure at the bubble formation point.
9. The composition as claimed in claim 6 , wherein the boiling point of this composition is between 0 and 40° C. at a pressure of between 0.9 and 4 bar absolute.
10. The composition as claimed in claim 6 , wherein the composition has from 10% to 65% by weight of hydrogen fluoride and from 90% to 35% by weight of E-3,3,3-trifluoro-1-chloropropene, the boiling point of this composition is between 0 and 40° C. at a pressure of between 0.9 and 4 bar absolute.