Core Viewpoint - The recent incident involving a woman's death due to accidental exposure to hydrofluoric acid has raised significant concerns about the sale and regulation of hazardous chemicals on e-commerce platforms [1][6]. Group 1: E-commerce Platform Response - Major e-commerce platforms have removed listings for hydrofluoric acid solutions following the incident, with searches yielding no results for related products [2][4]. - Prior to the removal, various concentrations of hydrofluoric acid solutions were available for purchase, with concentrations ranging from 0.5% to 40%, and sales quantities exceeding 10,000 units [6][9]. - Some sellers indicated that the removal of hydrofluoric acid products was a decision made by management, suggesting that sales may continue through private channels outside the platforms [6][9]. Group 2: Chemical Safety and Regulations - Hydrofluoric acid is classified as a highly toxic substance, capable of causing severe tissue damage and systemic poisoning, and is regulated under strict licensing and control measures [9][10]. - Only qualified entities, such as universities and research institutions, are permitted to purchase and use hydrofluoric acid, requiring proof of legitimate use and adherence to safety standards [9][10]. - The management of hazardous chemicals involves stringent tracking and monitoring protocols to ensure safe handling and prevent misuse [9][10]. Group 3: Consumer Awareness and Risks - Consumers have reported adverse reactions from using various chemical products, highlighting a lack of adequate safety warnings and instructions on product labels [10][11]. - There is a growing concern about the safety of everyday chemical products, including strong acids and bases, which can pose significant health risks if not handled properly [11][12]. - Experts emphasize the importance of proper storage, usage instructions, and consumer education to prevent accidents and ensure safety when using chemical products [15][16].