Sulphuric Acid (98%) - India

Sulphuric acid, with the chemical formula Hâ‚‚SOâ‚„, is a dense, oily, colorless to slightly yellow liquid that is highly corrosive and soluble in water. It is one of the most widely used industrial chemicals globally, essential in numerous applications across sectors. Commonly found in battery acid, fertilizers, detergents, mineral processing, and chemical synthesis, sulphuric acid plays a vital role in modern manufacturing. It is especially crucial in the production of phosphate fertilizers, where it reacts with phosphate rock. Despite its utility, sulphuric acid must be handled with extreme caution due to its highly exothermic reaction with water and strong corrosive nature, which can cause severe burns on contact with skin or organic materials.

Manufacturing Process
Sulphuric acid is predominantly manufactured using the Contact Process. The process begins with the combustion of sulfur or sulfide ores to form sulfur dioxide (SO₂). This gas is then oxidized to sulfur trioxide (SO₃) in the presence of a vanadium pentoxide (V₂O₅) catalyst at high temperatures. The SO₃ is subsequently absorbed in concentrated sulphuric acid to form oleum (H₂S₂O₇), which is finally diluted with water to produce sulphuric acid of the desired concentration. This method is favored for its efficiency, high purity output, and scalability, making it the standard in large-scale production facilities worldwide.