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The compound sodium metabisulfite is used in almost all commercial wines to prevent oxidation and preserve flavor, sodium bisulfite is sold by some home winemaking suppliers for the same purpose. [6] In fruit canning, sodium bisulfite is used to prevent browning (caused by oxidation) and to kill microbes.
Sodium bisulfite (or sodium bisulphite, sodium hydrogen sulfite) is a chemical mixture with the approximate chemical formula NaHSO 3. Sodium bisulfite is not a real compound, [ 2 ] but a mixture of salts that dissolve in water to give solutions composed of sodium and bisulfite ions.
Stop bath is commonly a 2% dilution of acetic acid in water, though a 2.5% solution of potassium or sodium metabisulfite works just as well. [1] Because organic developers only work in alkaline solutions, stop bath halts the development process almost immediately and provides precise control of development time.
Can of SPAM in 2005, boasting a 25% (one quarter) sodium content reduction. Salt (sodium chloride), dissolved in water, is used in the canning process, which helps prevent spoilage and can improve sensory characteristics. [22] As a result, canned food can be a major source of dietary salt. [23]
Ultrafiltration can also be used to separate lignosulfonates from the spent pulping liquid. [1] A list of CAS numbers for the various metal salts of lignosulfonate is available. [4] The electrophilic carbocations produced during ether cleavage react with bisulfite ions (HSO 3 −) to give sulfonates. R-O-R' + H + → R + + R'OH R + + HSO 3 − ...
Low-acid foods, such as vegetables and meats, require pressure canning. Food preserved by canning or bottling is at immediate risk of spoilage once the can or bottle has been opened. Lack of quality control in the canning process may allow ingress of water or micro-organisms.
An antichlor is a substance used to decompose residual hypochlorite or chlorine after chlorine-based bleaching, in order to prevent ongoing reactions with, and therefore damage to, the material that has been bleached. Antichlors include sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium thiosulfate, and hydrogen peroxide. [1 ...
The bisulfite ion (IUPAC-recommended nomenclature: hydrogensulfite) is the ion HSO − 3. Salts containing the HSO − 3 ion are also known as "sulfite lyes". [1] Sodium bisulfite is used interchangeably with sodium metabisulfite (Na 2 S 2 O 5). Sodium metabisulfite dissolves in water to give a solution of Na + HSO − 3. Na 2 S 2 O 5 + H 2 O ...