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Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals that are useful in many building materials and consumer products but have a large potential for harm.   The goal of this report is to inform and inspire building owners, architects, designers, building product manufacturers, and government decision makers to eliminate unnecessary uses of PFAS and to promote the design and use of safer non-PFAS alternatives.

The presence of hazardous chemicals in products makes the transformation to circularity more challenging. This report describes UNDP's interventions on Chemicals and Waste Management which aim to achieve circularity across different industries, inluding construction.

Phthalates are mainly used as plasticisers in plastics and can be found in everything from wall coverings and furniture to electronic devices and toys. Phthalates make up two-thirds of the plasticisers market but are proven to be hazardous for human health. This report gives an overview of what phthalates are, their use, and current legislation. It includes a three-step guide to substituting phthalates and analyses the alternatives. 

This report summarises the workstream of the International Sustainable Chemistry Collaborative Centre (ISC3) into the use of plastics in the built environment and the impacts on human health.

This report from the Healthy Building Network looks at the environmental health impacts of chlorine, a key ingredient in the PVC supply chain. The report lists the 86 largest chlor-alkali plants and 56 largest PVC plants in the Western Hemisphere, Africa, and Europe. It analyzes chlorine markets with an emphasis on the PVC supply chain, chlorine production technologies, and pollution associated with the production of chlorine and chlorine-based products.