Core Viewpoint - The tragic incident involving a woman in Hangzhou who suffered severe injuries and ultimately died from hydrogen fluoride poisoning has raised public awareness about the dangers of this hazardous chemical and the need for better management of dangerous chemicals throughout their lifecycle [1][4][21]. Group 1: Chemical Properties and Risks - Hydrogen fluoride is a colorless, corrosive liquid with acute toxicity, classified as category 1 under the acute toxicity hazard level, meaning it poses the highest risk [4][7]. - A mere 7ml of pure hydrogen fluoride can bind all free calcium in a 70kg person, highlighting its extreme danger [4][5]. - Symptoms of hydrogen fluoride exposure may not appear for hours, complicating timely medical intervention [5][8]. Group 2: Current Management and Regulatory Issues - The incident has prompted scrutiny of the management of hazardous chemicals, particularly in everyday settings where individuals may lack adequate protective knowledge [7][21]. - E-commerce platforms have been found to sell hydrogen fluoride solutions in various concentrations, often without proper safety warnings or handling instructions [11][14]. - Experts emphasize the need for stricter regulations on the sale and distribution of hazardous chemicals online, as current practices often violate safety protocols [18][21]. Group 3: Recommendations for Improvement - Experts recommend establishing a strict tracking system for hazardous chemicals to monitor their lifecycle from production to disposal [21][22]. - There is a call for improved public awareness and education regarding the dangers of hazardous chemicals, particularly in domestic settings [21][22]. - The upcoming revision of the Hazardous Chemicals Safety Law aims to enhance regulatory measures and improve safety management through technology and social collaboration [21][22].