水泥混合物中六价铬的浓度降至2毫克/千克（0.0002%）以下，以满足REACH附件XVII第47条中关于水泥及含水泥混合物投放市场和使用的限制条件。该混合物是否应归类为皮肤致敏物（H317）？

水泥混合物中六价铬的浓度降至2毫克/千克（0.0002%）以下，以满足REACH附件XVII第47条中关于水泥及含水泥混合物投放市场和使用的限制条件。该混合物是否应归类为皮肤致敏物（H317）？

In a cement mixture, the concentration of chromium (VI) is reduced to below 2 mg/kg (0,0002 %) to meet the conditions of the restriction on the placing on the market and use of cement and cement-containing mixtures in entry 47 of Annex XVII to REACH. Should the mixture be classified as skin sensitising (H317)?

不会。可溶性六价铬会导致水泥或含水泥混合物产生致敏作用。六价铬化合物通常被归类为皮肤致敏物1类，因此含有这些物质的混合物的分类限值为1%。当六价铬的浓度降至水泥总干重的2 ppm（0.0002%）以下时，不太可能达到致敏物质的分类浓度限值，因此危险说明H317不适用。需要注意的是，如果水泥混合物中可溶性六价铬的含量低于水泥总干重的0.0002%，则无需遵守附件二第2部分第2.3点关于EUH203声明的标签要求。但请注意，如果使用还原剂，则包装上必须包含包装日期、储存条件和储存期的信息，以保持还原剂的活性并将可溶性六价铬的含量保持在 0.0002% 以下。

No. Soluble chromium VI causes the sensitising effect of cement or cement-containing mixtures. Chromium (VI) compounds generally are classified as Skin sens 1, and therefore the classification limit for mixtures containing these substances is 1 %. When the concentration of chromium (VI) is reduced to below 2 ppm (0,0002 %) of soluble chromium (VI) of the total dry weight of the cement, the concentration limit for classification as sensitising is unlikely to be reached and thus the hazard statement H317 would not apply. It should be noted that the cement mixture containing below 0,0002 % soluble chromium (VI) of the total dry weight of the cement would also not be subject to the labelling requirement set in point 2.3 of Part 2 of Annex II, regarding the statement EUH203.  Please note, however, that if reducing agents are used then the packaging must include the information on the packaging date, the storage conditions and the storage period appropriate to maintaining the activity of the reducing agent and to keeping the content of soluble chromium VI below 0,0002 %.