Storage method for trifluoroethylene, and storage container for trifluoroethylene
View Patent ↗To provide a method for storing trifluoroethylene filled in a container for storage, transportation, etc., stably without causing a reaction such as polymerization. The method is characterized in that trifluoroethylene is stored in a sealed container in such a state that a gas phase and a liquid phase coexist, and in the gas phase, the concentration of oxygen at a temperature of 25° C. is kept to be at most 1,000 ppm by volume.
1. A method for storing trifluoroethylene in a sealed storage container, trifluoroethylene is stored in such a state that a gas phase and a liquid phase coexist, and the concentration of oxygen in the gas phase at a temperature of 25° C. is kept to be less than 1,000 ppm by volume.
2. The method for storing trifluoroethylene according to claim 1 , wherein said concentration of oxygen is kept to be from 1 to 1,000 ppm by volume.
3. The method for storing trifluoroethylene according to claim 1 , wherein said concentration of oxygen is kept to be from 3 to 1,000 ppm by volume.
4. The method for storing trifluoroethylene according to claim 1 , wherein said concentration of oxygen is kept to be from 3 to 300 ppm by volume.
5. The method for storing trifluoroethylene according to claim 1 , wherein said concentration of oxygen is kept to be from 3 to 50 ppm by volume.
6. The method for storing trifluoroethylene according to claim 1 , wherein in the gas phase, the concentration of non-condensable gases other than oxygen at a temperature of 25° C. is at most 1.5 vol %.
7. The method for storing trifluoroethylene according to claim 1 , wherein an inside of an unfilled storage container is deaerated to remove oxygen in the storage container, then, liquid-state trifluoroethylene is filled and sealed, and the trifluoroethylene is stored in the sealed storage container.
8. A sealed storage container in which trifluoroethylene is filled in such a state that a gas phase and a liquid phase coexist, and a concentration of oxygen in the gas phase at a temperature of 25° C. is at most 1,000 ppm by volume.
9. The storage container for trifluoroethylene according to claim 8 , wherein said concentration of oxygen is from 1 to 1,000 ppm by volume.
10. The storage container for trifluoroethylene according to claim 8 , wherein said concentration of oxygen is from 3 to 1,000 ppm by volume.
11. The storage container for trifluoroethylene according to claim 8 , wherein said concentration of oxygen is from 3 to 300 ppm by volume.
12. The storage container for trifluoroethylene according to claim 8 , wherein said concentration of oxygen is from 3 to 50 ppm by volume.