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
Textiles - Methods for determination of certain aromatic amines derived from azo colorants - Part 2 : detection of the use of certain azo colorants accessible by extracting the fibres.
纺织品。偶氮染色剂衍生的特定芳香胺的测定方法。第2部分：通过萃取纤维取得的偶氮染色剂使用的检测。
3
Moreover, some azo dyestuff wastewater also bears chromium compounds.