Method for storing tetrafluoropropene and container for storing tetrafluoropropene

Abstract

To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.

1 . A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration in the above gas phase is adjusted to at least 6 vol ppm and at most 500 vol ppm at a temperature of 25° C. 
     
     
         2 . (canceled) 
     
     
         3 . The method for storing tetrafluoropropene according to  claim 1 , wherein the tetrafluoropropene is 2,3,3,3-tetrafluoropropene. 
     
     
         4 . A container for storing tetrafluoropropene, which is filled with tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase, and closed, wherein the oxygen concentration in the above gas phase is at least 3 vol ppm and at most 500 vol ppm at a temperature of 25° C. 
     
     
         5 . (canceled) 
     
     
         6 . The container for storing tetrafluoropropene according to  claim 4 , wherein the tetrafluoropropene is 2,3,3,3-tetrafluoropropene. 
     
     
         7 . The container for storing tetrafluoropropene according to  claim 4 , which is a closed container.