中文内容由 Google Cloud Translation 自动生成，仅供参考；请以英文原文为准。问答资料来自欧盟化学品管理局（ECHA）官方网站。
答案（中文）
根据定义，研发中使用的物质数量小于每年1吨，因此无需根据REACH法规进行注册。但是，如果研发中使用的物质属于危险物质并投放到欧盟市场，则无论其数量多少，都需要向C&L清单进行申报。根据CLP法规第5(1)条，制造商、进口商和下游用户应识别相关信息，以确定该物质是否具有物理、健康或环境危害。如果没有测试数据，也没有任何其他充分信息表明某种物质应被分类，则无需向C&L清单进行申报。如果有足够的信息进行分类，且物质已投放市场，因此需要向C&L清单申报，则研发中使用的物质的IUPAC名称可以保密，如《实用指南第7号：如何在分类和标签清单中申报物质》（另见问答226、227、228）中所述。如果获得更多信息导致分类发生变化，则必须更新C&L申报（另见问答224）。
Answer (EN)
Quantities of substances used in R&D are by definition smaller than 1 tonne per year and are therefore not subject to registration under the REACH Regulation. If the substance used in R&D is hazardous and placed on the EU market, it, however, needs to be notified to the C&L inventory notwithstanding its volume.
According to Article 5(1) of the CLP Regulation, manufacturers, importers and downstream users shall identify the relevant information for the purpose of determining whether the substance entails a physical, health or environmental hazard.
If neither test data are available nor any other adequate information indicates that a substance should be classified, a notification to the C&L Inventory is not required. If sufficient information is available to classify, and the substance is placed on the market, and hence when the notification to the C&L Inventory is necessary, the IUPAC name of substances used in R&D can be kept confidential as set out in the Practical Guide No 7: How to notify substances in the Classification and Labelling Inventory (see also Q&A 226, 227, 228). If further information becomes available that leads to a change of the classification, the C&L notification has to be updated (see also Q&A 224).