This Portal serves to facilitate the exchange of information on per and poly-fluorinated chemicals, focusing specifically on per- and poly-fluoroalkyl substances (PFASs).In order to support a global transition towards safer alternatives, the Portal provides information on the following areas:What are PFASs?Risk reduction approachesAlternativesProduction and emissionsInformation from countriesInformation provided in this portal comes principally from the work done within the context of the OECD/UNEP Global PFC Group.