欧洲中毒中心接到有关日常接触的电话：一名儿童吞下清洁产品，一名工人吸入溶剂烟雾，一名电子烟使用者在使用新的电子液体后报告出现症状。为了治疗这些情况，毒理学家需要知道产品中的实际成分。从历史上看，该信息是根据 CLP 法规第 45 条提交的，但各个成员国提交的格式、深度和完整性差异很大，而且货架上的瓶子与数据库中的文件之间的联系很弱。Annex VIII replaced that patchwork with a single harmonised information requirement. Every in-scope mixture now has one stable identifier — the UFI — that appears on the label and in the SDS, and one structured dossier in the EU submission system. The toxicologist no longer has to guess which "vanilla cream e-liquid" the caller means; the UFI resolves the ambiguity instantly.简而言之，UFI 是一个稳定的、独立于语言的密钥，它将产品、其标签、安全数据表以及该确切配方的毒物中心档案连接起来。
A UFI is exactly 16 characters: uppercase letters and digits, split into four blocks of four, for example J200-U0CW-500U-XXXX or VV53-41GU-X00E-G0K8. On a label it is always written with the prefix "UFI:" so it cannot be confused with batch numbers or barcodes. The character set is deliberately restricted to avoid ambiguity between similar glyphs, and because the code carries no words, it needs no translation.UFI 不是随机的。它们由 ECHA UFI 生成器根据两个输入生成：源自增值税或 EORI 编号（或等效公司密钥）的公司标识符，以及您分配给每种混合物的 0 到 268,435,255 之间的内部配方编号。相同的两个输入始终会产生相同的 UFI，这意味着您可以提前生成代码，将其保存在注册表中并打印它们，而无需等待任何批准过程。实际结果是：您永远不应该手动分配或猜测 UFI。使用 ECHA 网站上或 IUCLID 提交内容中的生成器，并为每个产品版本保留一个配方编号。失去配方编号和 UFI 之间的联系是导致标签不匹配的快速途径。
The SDS is where most importers first meet the UFI in practice. Section 1, subsection 1.1, identifies the product; when a UFI is required, it is stated here, for example "UFI: J200-U0CW-500U-XXXX" immediately after the product identifier. Section 1.4 must carry the emergency telephone number of the relevant poison centre or the supplier medical information service.当您查看供应商的 SDS 时，请检查三件事。首先，1.1 中显示的 UFI 与标签上打印的 UFI 相匹配。其次，1.4 中的毒物中心编号属于产品销售的成员国。第三，向进口商披露的成分范围与 PCN 档案一致。仅当链中的每个文档都指向相同的档案时，UFI 才有用。
UFI 识别配方，因此关键问题是重新配方何时需要新代码。附件八区分了通知成分范围内的变化（需要更新提交但可以保持相同的 UFI）和改变混合物特性的变化（需要新的 UFI 和新的通知）。在实践中，如果分类成分的浓度超出您通知的范围，或者出现新的危险成分，请将其视为新配方。Discipline matters here. A brand that ships "the same" flavor with silent recipe tweaks can end up with a label that no longer matches the dossier in the poison centre database — precisely the failure the UFI was built to prevent. Keep a version log with dates, bands, and UFIs.档案本身也有一条卫生规则。当您提交更新的提交内容时，请确保旧提交内容可访问并标记修订版本。毒物中心可能在变更后数月内仍会收到有关旧库存的电话，因此退役的 UFI 永远不应该从您的注册表中默默删除 - 将其连同其配方记录和撤回日期一起存档。归档规则使您可以通过一次查找来回答审计员或毒物中心的问题。
The UFI must be printed on the label near the product identifier, prefixed with "UFI:", in a legible and durable form. For unlabelled or unpackaged mixtures it goes in SDS Section 1.1 instead.
[1] UL Solutions, "Unique Formula Identifier (UFI): Poison Centre Notification". https://www.ul.com/news/unique-formula-identifier-ufi-poison-centre-notification[2] Health and Safety Authority (HSA) Ireland, "Poison Centre Notification Ireland". https://www.hsa.ie/eng/your_industry/chemicals/legislation_enforcement/reach/safety_data_sheets/poisoncentrenotificationireland_v5_fin.pdf[3] European Chemicals Agency (ECHA), "UFI generator" (Poison Centres portal). https://poisoncentres.echa.europa.eu/ufi-generator[4] Health and Safety Executive for Northern Ireland (HSENI), "REACH Safety Data Sheets" (SDS requirements referenced in the context of Section 1.1). https://www.hseni.gov.uk/reach-safety-data-sheets
