Sulfur, also known as sulphur, is an inorganic substance with a CAS number of 7704-34-9. According to IUPAC nomenclature, it is named as "sulfur" or "sulphur", with the chemical formula S. Sulfur commonly occurs in nature as crystals or lumps, appearing as a yellow solid with a distinctive odor. Under normal environmental conditions, sulfur is a solid and has extensive applications in both industrial and consumer sectors. The following are some major uses of sulfur: ① Agriculture: Sulfur is used as a soil amendment to help regulate soil pH and improve the nutritional value of crops; ② Rubber Industry: Sulfur is a key raw material in rubber production, used in the vulcanization process to enhance the elasticity and durability of rubber; ③ Explosives: When mixed with potassium nitrate and charcoal, sulfur can be used to produce black powder, which is used in military and civilian explosives; ④ Pharmaceuticals: Sulfur serves as an antimicrobial and antifungal agent in certain medications, commonly used in the treatment of skin diseases; ⑤ Chemical Industry: Sulfur is a crucial raw material for manufacturing sulfuric acid, an important industrial chemical used in the production of fertilizers, detergents, and paper. and various other products; ⑥ Metal processing: Sulfur is used in metal processing to produce certain types of metal sulfides, which serve as lubricants and anticorrosive agents; ⑦ Food industry: In certain food processing applications, sulfur is used as a bleaching agent and preservative.