Sulfuric acid is one of the most lively binary inorganic acid, can react with many metal. A high concentration of sulfuric acid has a strong water absorption, can be used as dehydrating agent, carbonized wood, paper, cotton and linen fabric and biological raw material containing carbohydrates. When mixed with water, will also release a lot of heat. It has strong corrosion resistance and oxidation, so need to be careful to use. Is a kind of important industrial raw material, can be used to make fertilizers, drugs, explosives, paint, detergent, battery, etc., are widely used in the purification of oil, metal smelting and dye industry. Commonly used as chemical reagent, can be used as a dehydrating agent in organic synthesis and sulfonating agent.