DICHLOROMETHANE PURIFICATION METHOD AND PROCESS FOR PRODUCING DIFLUOROMETHANE USING THE SAME

To provide a dichloromethane purification method which can reduce the amount of stabilizers present in dichloromethane and is feasible in industry by a simple operation, a dichloromethane purification method includes bringing dichloromethane containing at least one stabilizer selected from the group...

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Hauptverfasser: OHNO HIROMOTO, OHI TOSHIO
Format: Patent
Sprache:eng
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Zusammenfassung:To provide a dichloromethane purification method which can reduce the amount of stabilizers present in dichloromethane and is feasible in industry by a simple operation, a dichloromethane purification method includes bringing dichloromethane containing at least one stabilizer selected from the group consisting of 2-methyl-2-butene, hydroquinone and resorcinol into contact in a liquid phase state with a zeolite having an average pore size of 3 to 11 and thereby reducing the amount of the stabilizer.