Sulfuric acid finished product section
Sulfuric acid (chemical formula: H2SO4), an important oxyacid of sulfur. Anhydrous sulfuric acid is a colorless oily liquid that crystallizes at 10.36 ° C. Generally, its aqueous solutions of various concentrations are used, which are prepared by the tower method and the contact method. The former obtained crude dilute sulfuric acid, the mass fraction is generally about 75%; the latter can get concentrated sulfuric acid with a mass fraction of 98.3%, boiling point 338 ℃, relative density 1.84.
Sulfuric acid is a vivid binary inorganic strong acid that can react with most metals. High-concentration sulfuric acid has strong water absorption and can be used as a dehydrating agent, carbonized wood, paper, cotton and linen fabrics, and bio-carbohydrate-containing substances. When mixed with water, it also emits a lot of heat. It has severe corrosiveness and oxidation, so it needs to be used with caution. It is an important industrial material that can be used to make fertilizers, medicines, explosives, pigments, detergents, batteries, etc. It is also widely used in industries such as oil purification, metal drilling, and dyes. Commonly used as chemical reagents, as dehydrating agents and sulfonating agents in organic compositions.