Provided is a method for obtaining HFO-1132(E) and/or HFO-1132(Z) efficiently. The method is a method for producing HFO-1132(E) and/or HFO-1132(Z), comprising supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor, and performing an isomerization reaction between HFO-1132(E) and HFO-1132(Z).

Provided is a method for obtaining HFO-1132(E) and/or HFO-1132(Z) efficiently. The method is a method for producing HFO-1132(E) and/or HFO-1132(Z), comprising supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor, and performing an isomerization reaction between HFO-1132(E) and HFO-1132(Z).

Provided is a method for obtaining HFO-1132(E) and/or HFO-1132(Z) efficiently. The method is a method for producing HFO-1132(E) and/or HFO-1132(Z), comprising supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor, and performing an isomerization reaction between HFO-1132(E) and HFO-1132(Z).

Heterogenous azeotrope or azeotrope-like compositions comprising 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf) and water which may include from about 0.09 wt. % to about 92.69 wt. % 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf) and from about 7.31 wt. % to about 99.91 wt. % water and having a boiling point between about 12.0° C. and about 13.6° C. at a pressure of between about 12.5 psia and about 16.5 psia. The azeotrope or azeotrope-like compositions may be used to separate impurities, including water, from 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf).

Heterogenous azeotrope or azeotrope-like compositions comprising 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf) and water which may include from about 0.09 wt. % to about 92.69 wt. % 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf) and from about 7.31 wt. % to about 99.91 wt. % water and having a boiling point between about 12.0° C. and about 13.6° C. at a pressure of between about 12.5 psia and about 16.5 psia. The azeotrope or azeotrope-like compositions may be used to separate impurities, including water, from 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf).

Heterogenous azeotrope or azeotrope-like compositions comprising 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf) and water which may include from about 0.09 wt. % to about 92.69 wt. % 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf) and from about 7.31 wt. % to about 99.91 wt. % water and having a boiling point between about 12.0° C. and about 13.6° C. at a pressure of between about 12.5 psia and about 16.5 psia. The azeotrope or azeotrope-like compositions may be used to separate impurities, including water, from 2-chloro-3,3,3-trifluoropropene (HFCO-1233xf).

To provide a method for safely and stably storing a hydrochlorofluoroolefin filled in a container for storage, transportation, etc. A method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of air in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 3.0 vol %, and a method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of oxygen in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 0.6 vol %.

To provide a method for safely and stably storing a hydrochlorofluoroolefin filled in a container for storage, transportation, etc. A method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of air in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 3.0 vol %, and a method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of oxygen in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 0.6 vol %.

To provide a method for safely and stably storing a hydrochlorofluoroolefin filled in a container for storage, transportation, etc. A method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of air in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 3.0 vol %, and a method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of oxygen in the gas phase in the storage container at a temperature of 25° C. is kept to be at most 0.6 vol %.

A method of producing a fluoroolefin includes contacting a compound of formula (1), R.sub.fCX.sub.1═CHCF.sub.3, with a fluorinated ethylene compound of formula (2), CX.sub.2X.sub.3═CX.sub.4X.sub.5 in the presence of a catalyst. In the compound of formula (1), R.sub.f is a linear or branched C.sub.1-C.sub.10 perfluorinated alkyl group and Xi is H, Br, Cl, or F. In the compound of formula (2), X.sub.2, X.sub.3, X.sub.4, and X.sub.5 are each independently H, Br, Cl, or F and at least three of X.sub.2, X.sub.3, X.sub.4, and X.sub.5 are F. The resulting composition comprises a compound of formula (3), R.sub.f(CF.sub.2).sub.nCX.sub.6═CH(CF.sub.2).sub.mCX.sub.7X.sub.8CFX.sub.9X.sub.10. In the compound of formula (3), X.sub.6, X.sub.7, X.sub.8, X.sub.9, and X.sub.10 are each independently H, Br, Cl, or F, and the total number of each of H, Br, Cl, and F corresponds to the total number of each of H, Br, Cl, and F provided by the compounds of formulae (1) and (2).