REACH 附件 VII 中端点 7.14（粒度测定）和 7.14bis（粉尘度）第 2 栏中提到的“颗粒形式”的定义是什么？

REACH 附件 VII 中端点 7.14（粒度测定）和 7.14bis（粉尘度）第 2 栏中提到的“颗粒形式”的定义是什么？

What is the definition of "granular form", mentioned in column 2 of endpoints 7.14 (granulometry) and 7.14bis (dustiness) under Annex VII of REACH?

REACH法规中没有“颗粒状”一词的定义。然而，它可以被解释为“粒子”。根据定义，所有纳米形态的颗粒数量中至少有50%小于100纳米，并且所有纳米形态在以干粉形式存在时均为“颗粒状”。然而，有些纳米形态仅以悬浮液形式存在，或者在其整个生命周期中都融入基质中。在这种情况下，可能不会暴露于干粉或颗粒状形式。

There is no definition for the term “granular form" in REACH. However, this can be interpreted to mean "particles".    All nanoforms, by definition, will have at least 50% of their particles by number below 100 nm, and all nanoforms will be "granular" when available as a dry powder. However, some nanoforms are available only in suspensions, or are incorporated into a matrix throughout their entire lifecycle. In this case, there may be no exposure to the dry powder, or the granular form in general.