Key regulations impacting catalysis include: - REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) in the EU, which requires companies to register and evaluate the safety of chemical substances, including catalysts. - The Clean Air Act in the US, which includes provisions for controlling air pollutants from catalytic converters used in vehicles. - The Toxic Substances Control Act (TSCA), which provides EPA with authority to require reporting and testing of chemical substances, including catalysts.