PURPOSE: To decompose a halogenated aromatic compound into such concentration as incapable of being substantially detected, by keeping the ratio of alkali in a system at an initiating time equal to or above a specific value, when the aromatic compound is kept in contact with the alkali in an aprotic polar solvent for the prescribed time at the preset temperature.
CONSTITUTION: In this alkali decomposition method for a halogenated aromatic compound, the ratio of alkali in a system at an initiating time is kept at 5,000mg/kg or more, when the compound and alkali are kept in contact with each other in an aprotic polar solvent for 1 to 10 hours at a temperature between 150 to 300°C. When this method is used for decomposing alkali, a halogenated aromatic compound regarded as causing a problem on environmental protection or directly damaging a human body, even if small in an initiating substance, can be decomposed into such concentration as incapable of being substantially detected over a wide dilution range from 100% to several mg/kg.
TSUKUMO KIYOHIKO
NAKAMURA MICHIHIKO
YANO TSUNEO
SUZUKI NOBUHIRO
TOMA TOSHIYOSHI
FURUHASHI KOICHI
NAKAYAMA NOBUYUKI
MITSUI BUSSAN
TOKYO ELECTRIC POWER CO
NEOS KK