Sulfuric acid (chemical formula: H2SO4), the most important oxyacid of sulfur. Anhydrous sulfuric acid is a colorless oily liquid which crystallizes at 10.36 ° C. It is usually used in various aqueous solutions of various concentrations and is prepared by a tower method and a contact method. The former is obtained as crude dilute sulfuric acid, and the mass fraction is generally about 75%; the latter can obtain a concentrated sulfuric acid having a mass fraction of 98.3%, a boiling point of 338 ° C, and a relative density of 1.84. Chinese name  &

Sulfuric acid (chemical formula: H2SO4), the most important oxyacid of sulfur. Anhydrous sulfuric acid is a colorless oily liquid which crystallizes at 10.36 ° C. It is usually used in various aqueous solutions of various concentrations and is prepared by a tower method and a contact method. The former is obtained as crude dilute sulfuric acid, and the mass fraction is generally about 75%; the latter can obtain a concentrated sulfuric acid having a mass fraction of 98.3%, a boiling point of 338 ° C, and a relative density of 1.84.