Core Viewpoint - The recent incident involving a 52-year-old woman in Hangzhou who died after accidentally stepping on hydrofluoric acid has raised public awareness about hazardous chemicals commonly found in households [1] Group 1: Household Cleaning Products - Various household cleaning agents, including chlorine disinfectants, acidic cleaners, and alkaline detergents, pose significant risks if not handled properly. Many consumers neglect safety warnings such as "wear gloves" on product labels [2][3] - 84 disinfectant, a typical chlorine disinfectant, contains sodium hypochlorite, which is highly corrosive and can cause skin burns upon direct contact. Most packaging includes safety instructions to dilute properly and wear rubber gloves [2] - Acidic cleaners like toilet bowl cleaners can cause severe skin irritation and chemical burns if touched. Prolonged contact may damage the skin's barrier and lead to blisters or scarring [2][3] Group 2: Alkaline Cleaning Agents - Alkaline cleaning agents, such as sodium hydroxide, are commonly used for cleaning greasy cookware and unclogging drains. Direct skin contact can lead to skin barrier damage or severe burns [3] - It is crucial to follow usage instructions carefully, especially when using alkaline drain cleaners, as improper handling can cause violent reactions and splattering, resulting in serious injuries [3] Group 3: Chemical Interactions - Mixing acidic toilet cleaners with chlorine disinfectants can produce toxic chlorine gas, which can irritate the respiratory system and lead to severe health issues [3] Group 4: Personal Care Products - Some personal care products, such as nail polish and remover, contain harmful substances like formaldehyde and acetone, which are flammable and can irritate the skin [5] - Hair sprays and gels contain organic solvents that are also flammable, necessitating caution during use and storage to avoid fire hazards [6] Group 5: Dry Ice Risks - Dry ice, commonly used in cold chain transport and restaurant settings, can cause "frostbite" injuries if handled improperly. Direct contact with skin can lead to severe cold burns [7] Group 6: Storage and Safety - Household chemicals should be stored in a cool, dry, and ventilated area, away from children and pets. It is advisable to purchase only short-term quantities to minimize risks associated with long-term storage [8] - Proper labeling and storage in original containers are essential to prevent accidental misuse. Expired or unused chemicals should be disposed of according to hazardous waste guidelines to avoid environmental contamination [8]

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].