Method for storing tetrafluoropropene and container for storing tetrafluoropropene
AssigneeAGC Inc.
InventorsMasato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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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.
Claims6
A method for storing tetrafluoropropene, the method comprising
- storing the tetrafluoropropene in a gaseous-liquid state comprising a gas phase and a liquid phase in a closed container,
- wherein
- the gas phase has an oxygen concentration ranging from 3 vol ppm to less than 3,000 vol ppm at 25° C. and a total content of non-condensable gas of 15,000 vol ppm or less at 25° C.
A closed container for storing tetrafluoropropene in a gaseous-liquid state of comprising a gas phase and a liquid phase, wherein
- the gas phase has an oxygen concentration ranging from 3 vol ppm to less than 3,000 vol ppm at 25° C. and a total content of non-condensable gas of 15,000 vol ppm or less at 25° C., and
- the closed container is made of at least one material selected from the group consisting of a carbon steel, a manganese steel, a chromium-molybdenum steel, a stainless steel, and an aluminum alloy.
Dependencies are inferred from the claim text.