väävelpentoksiidi

Väävelpentoksiidi, chemical formula S2O5, is an inorganic compound. It is the anhydride of sulfurous acid, meaning it is formed by the removal of water from sulfurous acid. Väävelpentoksiidi exists as a white crystalline solid. It is typically formed when sulfur dioxide (SO2) is reacted with oxygen (O2) under specific conditions, though it is an intermediate in some reactions rather than a commonly isolated product.

This compound is relatively unstable and readily reacts with water to reform sulfurous acid. Its reactivity also extends to other nucleophiles. Väävelpentoksiidi is not as common or industrially significant as sulfur trioxide (SO3), which is the anhydride of sulfuric acid. Its presence is often noted in chemical processes involving sulfur oxides. Due to its reactivity and potential for decomposition, proper handling and storage are important when it is encountered in laboratory settings.