当混合物的危险成分（组分）特性发生变化时，是否可以应用桥接原则“当混合物的成分发生变化时对分类进行审查”？

当混合物的危险成分（组分）特性发生变化时，是否可以应用桥接原则“当混合物的成分发生变化时对分类进行审查”？

Can the bridging principle "Review of the classification where the composition of a mixture has changed" be applied where the identity of the hazardous constituents (ingredients) of a mixture change?

不可以。“混合物成分发生变化时进行分类审查”的桥接原则仅适用于含有相同成分（组分）的混合物。仅允许危险成分（组分）的浓度（而非成分本身）在附件一第一部分表1.2规定的范围内发生变化，该范围适用于第15(2)(a)条。

No, the bridging principle "Review of classification where the composition of a mixture has changed" can only be used for mixtures containing the same constituents (ingredients). It is only the concentrations of the hazardous constituents (ingredients) and not the constituents themselves that are permitted to change, within the ranges specified in Table 1.2 in Part 1 of Annex I which applies Article 15(2)(a).