Pyrosulfate
In chemistry, disulfate or pyrosulfate is the anion with the molecular formula Template:Chem/link. Disulfate is the IUPAC name. [1] It has a dichromate-like structure and can be visualised as two corner-sharing SO4 tetrahedra, with a bridging oxygen atom.[2] In this anion, sulfur has an oxidation state of +6. Disulfate is the conjugate base of the hydrogen disulfate (hydrogen pyrosulfate) ion Template:Chem/link, which in turn is the conjugate base of disulfuric acid (pyrosulfuric acid).
Role in sulfation
Industrial production of sulfate ester-based surfactants involves the reaction (sulfation) of fatty alcohols with sulfur trioxide. For example, dodecyl alcohol is sulfated using sulfur trioxide. The reaction proceeds by initial formation of the pyrosulfate:
Several million tons are produced annually.[3]
See also
References
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- ↑ International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. Template:ISBN. p. 130. Electronic version.
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