Legal Analysis: Buying 8 kilograms of white sugar in the supermarket to real-name registration system is to prevent the buyer from illegal use, because white sugar contains sulfur dioxide, which is a dangerous chemical component. After adding oxidant to white sugar, it will have a violent reaction and even an explosion.

Legal basis: Article 30 of the Law of the People's Republic of China on Public Security Administration Punishment violates state regulations, and anyone who manufactures, buys, sells, stores, transports, mails, carries, uses, provides or disposes of explosive, toxic, radioactive and corrosive substances or infectious disease pathogens shall be detained for more than 10 days and less than 15 days; If the circumstances are minor, they shall be detained for more than five days and less than ten days.