| abstract |
Provided is a method for separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition containing HFO-1234yf and R40 with high efficiency.nA method for separating HFO-1234yf that does not substantially contain R40, said method comprising bringing an azeotropic or quasi-azeotropic composition comprising HFO-1234yf and R40 into contact with a specific extraction solvent. |