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paratoluidine 對甲苯胺 對甲苯胺 Toluidine \To*lu"i*dine\, n. (Chem.)
Any one of three metameric amido derivatives of toluene analogous to aniline, and called respectively {orthtoluidine}, {metatoluidine}, and {paratoluidine}; especially, the commonest one, or {paratoluidine}, which is obtained as a white crystalline substance. [1913 Webster] Note: It is used in the aniline dye industry, and constitutes the essential nucleus or radical of those dyes. [1913 Webster] Toluol
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