Core Viewpoint - The Ministry of Emergency Management of China has announced the inclusion of five new chemical substances into the "Catalog of Hazardous Chemicals," aiming to enhance safety risk management for hazardous chemicals. Public feedback is being solicited until February 21, 2026 [1]. Group 1: New Chemical Substances - The five newly added chemical substances are 3-chloropropyne, 2-iodobenzoyl acid, 2-diazoacetyl nitrobenzyl ester, methanesulfonyl azide, and 2-methyl-2-nitrobenzoic acid [1]. - These substances are categorized as fine chemicals and are widely used in the synthesis of pharmaceutical intermediates and as reagents in organic chemical reactions [1]. Group 2: Regulatory Implications - Once included in the catalog, these substances will be legally defined as "hazardous chemicals," subjecting their entire lifecycle to strict regulatory oversight by national laws [1].

Core Viewpoint - The Ministry of Emergency Management is seeking public opinion on including five new chemical substances in the "Directory of Hazardous Chemicals" due to their high risk and the need for enhanced management [1] Group 1: Chemical Substances - The five chemical substances proposed for inclusion are 3-chloropropyne, 2-iodobenzoyl acid, 2-diazopropionic acid nitrobenzyl ester, methanesulfonyl azide, and 3-methyl-2-nitrobenzoic acid [1] - The Ministry has conducted thorough research on these chemicals, considering their hazardous characteristics, safety risks in production and transportation, and domestic and international usage [1] Group 2: Regulatory Context - The inclusion of these chemicals is part of a broader effort to strengthen management as new chemicals with high risks continue to emerge alongside rapid economic and social development [1] - The Ministry plans to supplement and improve the "Classification Information Table for Hazardous Chemicals" in conjunction with this proposal [1]