荧光增白剂（OBA）偶氮染料是否符合附件 XVII 第 43 条的含义？

荧光增白剂（OBA）偶氮染料是否符合附件 XVII 第 43 条的含义？

Are optical brightening agents (OBAs) azodyes within the meaning of the Entry 43 to Annex XVII?

通过文献检索和咨询该领域的专家，未发现荧光增白剂（或更确切的说法是荧光染料）与偶氮染料之间存在任何结构联系，因为荧光染料中的NH键连接到杂环NC结构，因此无法形成22种禁用芳胺中的任何一种，或者它们不含任何偶氮键，而偶氮键无法发生还原裂解，生成偶氮染料禁用的任何芳香胺。因此，目前，这些信息确认附件XVII第43条中的限制不涵盖荧光增白剂（OBA）。如果荧光增白剂的化学结构与上述定义不同，则此答案可能会相应更改。

Through a literature search and consultation with experts in this area it was not found any structural connection between optical brighteners (or better called fluorescent dyes) and azodyes since either the NH bonds in the fluorescent dyes are connected to heterocyclic NC structures and therefore cannot form any of the 22 banned arylamines or they do not contain any azo bonds where reductive cleavage could take place to generate any of the aromatic amines covered by the azodyes ban. Therefore at the present time, this information confirms that the restriction in Entry 43 to Annex XVII does not cover optical brightening agents (OBAs). Should the chemical structure of optical brightening agents be different from the definition as reported above, this answer may change accordingly.