The colorimetry of sulfuric acid and p-Dimethylaminobenzaldehyde used to determinate the fusel oil of alcoholic liquor,but it occurs deviation.

定白酒中杂醇油常采用硫酸-对二甲胺基苯甲醛比法,定常有差。

Based on the colorimetry mechanism,the meaning oftrichroism is studied,as well as the synthetic and selecting principles of trichroism ofreactive and disperse dyes in particular.

本文学原理说明三原意义,并详细论述活性染料及分散染料三原的合成和筛选原则。