Hodogaya Chemical Co., Ltd.

Toshitaka Kaneshiki

Tadayoshi Haneda

Makoto Suzuki

Yuichi Hane

Toshiyuki Endo

Tetsuo Takematsu

Yoshihiko Abe

Sueo Kanno

Masaaki Hoya

Osamu Narukawa

A selective isolation of m-dichlorobenzene is carried out at a high efficiency by bringing an isomeric mixture containing m- and o- and/or p-dichlorobenzenes into contact with an absorbing material comprising a TPZ-3 type zeolite consisting of at least one aluminosilicate compound of the formula (I):

Method for selective isolation of Dichlorobenzene

A method for selectively separating 2,6-dichlorotoluene from a mixture of dichlorotoluene isomers by means of a zeolite adsorber, characterized in that a zeolite selected from the group consisting of ZSM-5 zeolite, ZSM-8 zeolite, ZSM-11 zeolite, ZSM-21 zeolite, ZSM-35 zeolite, Zeta-1 zeolite, Zeta-3 zeolite and TPZ-3 zeolite, is used as the adsorber to selectively separate 2,6-dichlorotoluene as a non-adsorbed component.

Method for adsorptive separation of dichlorotoluenes

A method for selective separation of 2,6-dichlorotoluene from a mixture of dichlorotoluene isomers by means of a zeolite-type adsorbent, wherein ZSM-5 type zeolite is used as the adsorbent for selectively separating 2,6-dichlorotoluene as a non-adsorbed component.

Method for selective separation of 2,6-dichlorotoluene

A herbicidal composition comprises a novel compound of benzamide derivative having the formula ##STR1## wherein R represents a C.sub.1 -C.sub.8 alkyl group; X represents oxygen or sulfur atom and n is an integer of 1 or 2.

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Tokyo, Japan

Toshitaka Kaneshiki