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A space-filling model of the sulfite anion. Sulfites or sulphites are compounds that contain the sulfite ion (systematic name: sulfate(IV) ion), SO 2− 3. The sulfite ion is the conjugate base of bisulfite. Although its acid (sulfurous acid) is elusive, [1] its salts are widely used.
A sulfite sulfate is a chemical compound that contains both sulfite and sulfate anions [SO 3] 2− [SO 4] 2−. These compounds were discovered in the 1980s as calcium and rare earth element salts. Minerals in this class were later discovered. Minerals may have sulfite as an essential component, or have it substituted for another anion as in ...
Transition metal sulfito complexes are coordination compounds containing sulfite (SO 3 2-) as a ligand. The inventory is large. Few sulfito complexes have commercial applications, but sulfite is a substrate for the molybdoenzyme sulfite oxidase. [2]
The hydrogensulfate ion (HSO − 4), also called the bisulfate ion, is the conjugate base of sulfuric acid (H 2 SO 4). [59] [b] Sulfuric acid is classified as a strong acid; in aqueous solutions it ionizes completely to form hydronium (H 3 O +) and hydrogensulfate (HSO − 4) ions.
3, the corresponding arsenic ion, ortho-arsenite, AsO 3− 3 is known. An example is Ag 3 AsO 3 as well as the polymeric meta-arsenite (AsO − 2) n. [7] The iso-electronic sulfite ion, SO 2− 3 is known from its salts. [7]
A chloride sulfite or sulfite chloride is a chemical compound that contains chloride and sulfite anions (SO 3 2− Cl −). The known compounds of this type are all late transition metal sulfito complexes. Chlorine may be present as a ligand (chloro) or as an ion (chloride).
Sulfite is with high affinity reduced by sulfite reductase to sulfide with ferredoxin as a reductant. The remaining sulfate in plant tissue is transferred into the vacuole. The remobilization and redistribution of the vacuolar sulfate reserves appear to be rather slow and sulfur-deficient plants may still contain detectable levels of sulfate.
Sodium sulfite (sodium sulphite) is the inorganic compound with the chemical formula Na 2 SO 3. A white, water-soluble solid, it is used commercially as an antioxidant and preservative. It is also suitable for the softening of lignin in the pulping and refining processes of wood and lignocellulosic materials. [1]