如果杂质是附件 XVII 所列物质，混合物的进口商是否有义务处理混合物中存在的潜在杂质？

如果杂质是附件 XVII 所列物质，混合物的进口商是否有义务处理混合物中存在的潜在杂质？

Does the importer of a mixture have any obligations concerning potential impurities present in the mixture, where the impurity is a substance listed in Annex XVII?

混合物进口商的义务取决于对 REACH 附件 XVII 中有关物质的每个具体条目的解释，同时考虑到措辞、上下文和相关限制的目的。例如，如果某种物质被完全禁止，那么它就不能投放市场，即使是作为进口混合物中某种物质的杂质也不能投放市场。另一方面，一些附件 XVII 条目规定了物质不能投放市场的限值。无论混合物中物质的来源是什么，都不能超过这个限值。但是，这只能根据物质、限制和进口混合物中物质作为杂质的浓度逐案确定。应当注意，如果进口混合物的使用不包含在附件 XVII 中该物质的“限制条件”中，则任何浓度的杂质都可能是允许的。

The obligations of the importer of the mixture depend on the interpretation of each specific entry in Annex XVII to REACH for the substance concerned, taking account of the wording, the context and the purpose of the restriction in question. For instance, if a substance were completely banned, then it could not be placed on the market, not even as an impurity in a substance in an imported mixture. On the other hand, some Annex XVII entries specify limits above which a substance cannot be placed on the market. This limit may not be exceeded, no matter what is the source of the substance in the mixture. However, this can only be determined on a case-by-case basis depending on the substance, the restriction and the concentration of the substance as an impurity in the imported mixture. It should be noted that the impurity may be permissible at any concentration if the use of the imported mixture is not covered in the ‘conditions of restriction' listed in Annex XVII for the substance.