由邻甲苯胺和甲醛水溶液反应合成得到了高纯度的3，3 -二甲基-4，4 -二氨基二苯甲烷（MDT），并对其性能进行了表征。
The polyimide monomer of 3,3 -dimethyl-4,4 -diaminodiphenylmethane(MDT)was synthesized through the reaction between O-methyl aniline and aqueous formaldehyde solution.
目的比较了比色法、薄层色谱法、高效液相色谱法测定甲芬那酸中2,3 -二甲基苯胺杂质的方法，并建立了毛细管气相色谱法控制甲芬那酸中2,3 -二甲基苯胺的杂质限量。
Objective To compare colorimetry, TLC, HPLC, and establish a method for the limited control of 2, 3-dimethylaniline in mefenamic acid by GC with capillary column.
戊基-3,4 -二甲基苯胺是除草剂二甲戊乐灵的中间体。
N - (3-pentyl) -3, 4-dimethylaniline is the intermediate of the herbicide.
戊基-3,4 -二甲基苯胺是除草剂二甲戊乐灵的中间体。
N - (3-pentyl) -3, 4-dimethylaniline is the intermediate of the herbicide.
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