限制条目73的范围包括哪些物质？

限制条目73的范围包括哪些物质？

What are the substances in the scope of restriction entry 73?

限制条目73涉及“（3,3,4,4,5,5,6,6,7,7,8,8,8-十三氟辛基）硅烷三醇及其任何单-、双-或三-O-（烷基）衍生物（以下简称TDFA）”。该限制针对的是面向公众供应的喷雾产品（例如，气雾剂、泵式喷雾器和扳机式喷雾器以及市售的喷雾剂），这些产品含有TDFA和有机溶剂的混合物。目标物质的通式如下：理论上，烷氧基链的变化可以产生大量的母体化合物。但需要注意的是，该限制适用于通式涵盖的所有物质，以避免被其他多氟辛基烷氧基硅烷取代。受限制物质示例：更多信息，请参阅最终背景文件，该文件可在ECHA网站的“限制意向登记直至结果”部分查阅。

Restriction entry 73 concerns ‘(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl) silanetriol and any of its mono-, di- or tri-O-(alkyl) derivatives (hereafter referred as TDFAs)’The restriction targets spray products for supply to the general public (e.g. aerosol dispensers, pump and trigger sprays and mixtures marketed for spray application) containing mixtures of TDFAs and organic solvents. A general formula for the targeted group of substances can be given as:In theory, variations in the alkoxy chain can give rise to a very large number of parent compounds. It is important to note, however, that the restriction applies to all substances which are covered by the general formula in order to avoid substitution to other polyfluorooctyl alkoxysilanes.Examples of substances targeted by the restriction:More information is available in the Final background document accessible on the ECHA website in the Registry of restriction intentions until outcome section.