Sulphuric acid for milk

Sulfuric acid is a chemical compound of sulfur with the molecular formula H2SO4. The 100% sulfuric acid is a colorless, oily, very viscous and hygroscopic liquid, which is sometimes called monohydrate in engineering. Sulfuric acid is one of the strongest acids and is highly corrosive. This mineral acid forms two series of salts, the hydrogen sulfates and the sulfates, in which one and two protons, respectively, are replaced by cations compared to the free acid.

Sulfuric acid is one of the most technically important chemicals of all and is one of the most widely produced basic chemical substances. In 1993, about 135 million tons[9] of sulfuric acid were produced worldwide; in 2012, the figure was 230 million tons. It is mainly used in fertilizer production and for the production of other mineral acids, such as hydrochloric or phosphoric acid. Aqueous solutions of various concentrations are mostly used.

The anhydride of sulfuric acid is sulfur trioxide (SO3). The solution of sulfur trioxide in the sulfuric acid beyond the stoichiometric ratio is called fuming sulfuric acid or oleum. Related acids are sulfurous acid (H2SO3), which is derived from sulfur dioxide, and thiosulfuric acid (H2S2O3), in which one oxygen atom is replaced by sulfur.