1·Heterocyclic azo dyes are one group of the most important chromogenic reagents in spectrophotometric analysis.
杂环偶氮试剂是一类重要的有机显色剂。
2·Naphthol AS-BI is an important pigment intermediate, which is used to synthesize a new kind of high quality azo dyes.
色酚as - BI是一种颜料中间体，以它为原料合成的偶氮颜料是一类性能优良的新型颜料。
3·Because of the photoisomerization of azo dyes, this system shows many unique characteristics, which could not be explained by existing theories.
由于偶氮染料光致异构现象，这种体系体现出很多独特的性质，且用现有理论无法进行解释。
4·Moreover, some azo dyestuff wastewater also bears chromium compounds.
同时，一些偶氮染料废水中也存在铬离子。
5·All of the electro-reductions of azo groups are irreversible one-step and four-electron reductions.
偶氮基在酸性介质中的还原均为不可逆四电子一步全还原。