Objective to replace the developing agents benzene and toluene in thin-layer chromatography in the Chinese Pharmacopoeia 2005 Volume I.
目的替换《中国药典》(2005年版一部)薄层鉴别中使用苯和甲苯的展开剂。
The production technologies of phenol are briefly introduced, i. e. method based on cumin, toluene-benzoic acid based method, and direct oxidation of benzene.
简要介绍了苯酚的几种生产工艺，异丙苯法、甲苯-苯甲酸法和苯直接氧化法。
The constant volume visual method is used to measure the critical properties of CO2+toluene, CO2+cyclohexane, CO2+n-butyraldehyde, CO2+i-butyraldehyde, CO2+ methanol and CO2+alcohol binary systems.
本文首先采用固定体积的可视化观察法（乳光法）研究了在超临界CO_2加入甲苯、环己烷、正丁醛、异丁醛、甲醇和乙醇等共溶剂之后，整个体系临界性质的变化情况。
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