Method for producing and purifying 2,3,3,3-tetrafluoro-1-propene

A composition comprising 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene (1243zf), trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) and an organic extracting agent having:

• a separation factor S1,2 of greater than or equal to 1.40, said separation factor being calculated by the formula S1,2=(γ1,S*P1)/(γ2,S*P2) wherein γ1,S represents the activity coefficient of 2,3,3,3-tetrafluoropropene in said organic extracting agent at infinite dilution, P1 represents the saturating vapor pressure of 2,3,3,3-tetrafluoropropene, γ2,S represents the activity coefficient of 3,3,3-trifluoropropene (1243zf) in said organic extracting agent at infinite dilution, P2 represents the saturating vapor pressure of 3,3,3-trifluoropropene (1243zf),
• a separation factor S1,2 of greater than or equal to 1.40, said separation factor being calculated by the formula S1,2=(γ1,S*P1)/(γ2,S*P2) in which γ1,S represents the activity coefficient of 2,3,3,3-tetrafluoropropene in said organic extracting agent at infinite dilution, P1 represents the saturating vapor pressure of 2,3,3,3-tetrafluoropropene, γ2,S z represents the activity coefficient of trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) in said organic extracting agent at infinite dilution, P2 represents the saturating vapor pressure of trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), and
• an absorption capacity C2,S of greater than or equal to 0.60, said absorption capacity being calculated by the formula C2,S=1/(g2,S) in which g2,S represents the activity coefficient of 3,3,3-trifluoropropene (1243zf) in said organic extracting agent at infinite dilution;
• and an absorption capacity C2,S of greater than or equal to 0.60, said absorption capacity being calculated by the formula C2,S=1/(g2,S) in which g2,S represents the activity coefficient of trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) in said organic extracting agent at infinite dilution, and
• wherein the composition comprises at least one of the compounds chosen from the group consisting of chloromethane (40), 1,1-difluoroethane (152a), chloropentafluoroethane (115), 1,1,1,2-tetrafluoroethane (134a) and trans-1,2,3,3,3-pentafluoropropene (1225ye-E).