Method for producing composition containing purified fluorine-containing ether compound

A method for producing a composition comprising a purified fluorine-containing ether compound,

• the method comprising:
• (A) reacting, in the presence of a fluorine-containing ether compound represented by formula (1):
• CHX1X2CF2OX3, wherein X1 and X2 are the same or different and each represents a hydrogen atom, a fluorine atom, or a trifluoromethyl group, and X3 represents a C1-6 alkyl group, provided that not both X1 and X2 are trifluoromethyl groups, a fluorine-containing olefin compound represented by formula (2):
• CX1X2═CF(CF2)nOX3, wherein n represents 0 or 1, and X1, X2, and X3 are as defined above, provided that when X1 or X2 is a trifluoromethyl group, n is 0, and not both X1 and X2 are trifluoromethyl groups, with a halogenating agent and/or oxidant to convert the fluorine-containing olefin compound represented by the formula (2) to a halogen adduct and/or oxide, thereby obtaining a composition comprising the fluorine-containing ether compound represented by the formula (1) and the halogen adduct and/or oxide;
• and
• (B) separating the halogen adduct and/or oxide from the composition obtained in the step (A) to obtain a composition comprising a purified fluorine-containing ether compound.