Sulphuric acid Sulfuric acid (alternative spelling sulphuric acid ), also known as oil of vitriol , is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H 2 SO 4 . It is a colorless, odorless, and viscous liquid that is soluble in water and is synthesized in reactions that are highly exothermic. Its corrosiveness can be mainly ascribed to its strong acidic nature, and, if at a high concentration, its dehydrating and oxidizing properties. It is also hygroscopic, readily absorbing water vapor from the air. Upon contact, sulfuric acid can cause severe chemical burns and even secondary thermal burns; it is very dangerous even at lower concentrat...
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