Search results
Results from the WOW.Com Content Network
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 ...
The sodium metabisulfite in the Campden tablets will trap oxygen that enters the wine, preventing it from doing any harm. It is a common misconception that Campden tablets can be used to halt the ferment process in wine before all the available sugars are converted by the yeast, hence controlling the amount of residual sweetness in the final ...
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.
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.
Potassium metabisulfite, K 2 S 2 O 5, also known as potassium pyrosulfite, is a white crystalline powder with a pungent odour. It is mainly used as an antioxidant or chemical sterilant . [ 1 ] As a disulfite , it is chemically very similar to sodium metabisulfite , with which it is sometimes used interchangeably.
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.
Sodium metabisulfite This page was last edited on 1 November 2023, at 18:35 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ...
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 ...