A new form (available in <link https: echa.europa.eu documents form_manufacturing_process_description.pdf _blank>pdf or <link http: europeanchemicalsagency.musvc1.net e _blank>word format) has now been published to help EU manufacturers and importers report or request this information. Substances of unknown or variable composition, complex reaction products or biological materials (UVCB substances) are identified by, among other things, the description of the manufacturing process.

More information can be found in <link https: echa.europa.eu view-article journal_content title echa-weekly-21-june-2017 _blank>ECHA's weekly news.