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Sodium metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na 2 S 2 O 5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent. [2] When dissolved in water it forms ...
A disulfite, commonly known as metabisulfite or pyrosulfite, is a chemical compound containing the ion S 2 O 2− 5. It is a colorless dianion that is primarily marketed in the form of sodium metabisulfite or potassium metabisulfite. When dissolved in water, these salts release the hydrogensulfite HSO − 3 anion.
Sodium metabisulfite; From a chemical formula: This is a redirect from a chemical/molecular formula to its systematic (technical) or trivial name.
The sodium and potassium salts of bisulfite are not available, but solid and solutions of the approximate formula NaHSO 3 and KHSO 3 are widely marketed as sodium bisulfite and potassium bisulfite. Closely related are the metabisulfite salts with formula Na 2 S 2 O 5 and K 2 S 2 O 5, respectively sodium metabisulfite and potassium metabisulfite ...
In this technique, sodium bisulfite deaminates cytosine into uracil, but does not affect 5-methylcytosine, a methylated form of cytosine with a methyl group attached to carbon 5. When the bisulfite-treated DNA is amplified via polymerase chain reaction , the uracil is amplified as thymine and the methylated cytosines are amplified as cytosine.
Sulfites that are allowed to be added in food in the US are sulfur dioxide, sodium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, and potassium metabisulfite. [32] Products likely to contain sulfites at less than 10 ppm (fruits and alcoholic beverages) do not require ingredients labels, and the presence of sulfites ...