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）
是的。立法者的意图是涵盖壬基酚及其乙氧基化物的所有异构体（包括直链和支链异构体），因此所有异构体均受限制。对壬基酚和壬基酚乙氧基化物的限制是基于英国根据1993年3月23日第793/93号理事会条例（EEC）关于现有物质风险评估和控制的规定而编写的风险评估报告中确定的风险。风险评估报告指出：“据了解，CAS（化学文摘社）最初定义的壬基酚（CAS 编号：25154-52-3）涵盖了所有壬基酚。然而，后续修订将其重新定义为仅涵盖直链壬基酚，其他异构体的 CAS 编号各不相同。鉴于壬基酚的生产方法，其产生的直链壬基酚非常少，甚至可能不产生。产生的壬基酚在商用混合物中的含量可能非常低。商用壬基酚主要为 4-壬基酚，其烷基支链度各不相同且不确定。本评估涵盖商用生产的材料（主要为 4-壬基酚，支链）。该材料还含有少量其他异构体和杂质，CAS 编号为 84852-15-3。”因此，经 2003/53/EC 指令修订的理事会指令 76/769/EEC 并未指定壬基酚的任何 CAS 编号或 EC 编号。在 552/2009/EC 法规对 REACH 限制的修订中，该法规进行了多项技术性修改，并添加了 CAS 编号和 EC 编号。此问题已通过从委员会法规 (EU) 2020/2096 的条目中删除 EC 编号和 CAS 编号得到纠正。
Answer (EN)
Yes. The intention of the legislator was to cover all isomers, linear and branched, of nonylphenol and their ethoxylates and therefore all of them are covered by the restriction.
The restriction on nonylphenol and nonylphenol ethoxylates was based on the risks identified in the risk assessment report prepared by the United Kingdom under Council Regulation (EEC) No 793/93 of 23 March 1993 on the evaluation and control of the risks of existing substances. The risk assessment report states that "It is understood that nonylphenol (CAS Number: 25154-52-3) as originally defined by CAS (Chemical Abstract Service) covered all nonylphenols. However, subsequent revisions redefined it to cover only straight chain nonylphenol, other isomers having different CAS numbers. Given the method of manufacture of nonylphenols, very little if any straight chain nonylphenol is produced. That which is produced is only likely to be present at very low levels in commercial mixtures. The commercially produced nonylphenols are predominantly 4-nonylphenol with a varied and undefined degree of branching in the alkyl group. This assessment covers commercially produced material (predominantly 4-nonylphenol, branched). This material will also contain smaller amounts of other isomers and impurities, and falls under the CAS Number 84852-15-3."
Therefore Council Directive 76/769/EEC, as amended by Directive 2003/53/EC, did not specify any CAS or EC numbers for nonylphenol. In the revision of the REACH restriction by Regulation 552/2009/EC, which made several technical changes, the CAS and EC numbers were added. This has been corrected by deletion of the EC and CAS numbers from the entry with the Commission Regulation (EU) 2020/2096.