RT null T1 Topic Sheet: Criteria for Chemicals A1 United Nations Environment Programme, K1 chemical K1 plastic K1 pollution K1 hazardous waste YR 2023 FD 2023-05 LK https://wedocs.unep.org/handle/20.500.11822/42234 UL https://wedocs.unep.org/handle/20.500.11822/42234 NO Over 13,000 chemicals are associated to plastics (UNEP 2023), of which many are of concern. They cover additives, monomers, processing aids and non-intentionally added substances. Different approaches may be followed to identify those chemicals and prioritise them as they could be subject to control measures. This topic sheet provides an overview of potential criteria which may be useful to consider and highlight a selection of prioritisation methods. DS UN Environment Document Repository RD Sep 17, 2026