OECD has published a new report reviewing the terminology of per- and polyfluoroalkyl substances (PFASs).

This report summarizes recent efforts by the OECD/UNEP Global PFC Group in reviewing the universe and terminology of per- and polyfluoroalkyl substances (PFASs) to provide recommendations and practical guidance to all stakeholders with regard to the terminology of PFASs.

In particular, this report highlights a revised PFAS definition to comprehensively reflect the universe of PFASs, practical guidance on how to use the PFAS terminology, a systematic approach to characterization of PFASs based on molecular structural traits to assist stakeholders, including non-experts, in making their own categorization based on their needs, and areas in relation to the PFAS terminology that warrant further development.