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] .

Sodium metabisulfite (Na2S2O5) is used as an antioxidant and antimicrobial agent in a variety of drugs and functions as a preservative in many food preparations. In addition to their antioxidant activity, sulfites oxidize to sulfite radicals (SO3-) initiating lipid peroxidation.

Sodium metabisulfite is a chemical compound with the formula Na 2 S 2 O 5. It is also known as sodium pyrosulfite and sodium disulfite. Na 2 S 2 O 5 is an ionic compound containing the sodium cation (Na +) and the metabisulfite anion (S 2 O 52-).

2020年5月18日 · Sodium metabisulfite can be made from the reaction between sulfur dioxide with sodium carbonate. The following is the reaction equation: SO2 + Na2SO3 → Na2S2O5.

2023年5月2日 · Though sodium metabisulfite is a common food additive, for some people, it can cause negative side effects. Sodium metabisulfite is a type of sulfite additive. It is used as a preservative and antioxidant to prevent browning and discoloration during food preparation and distribution, according to the Cleveland Clinic.

2023年12月30日 · Sodium metabisulfite (chemical formula Na2S2O5), also called disodium, is a white-yellowish crystalline powder used as an antioxidant, disinfectant, and preservative agent. It easily dissolves in water.

Sodium Metabisulfite has the chemical formula Na2S2O5 and its molecular mass is 190.107g/mol. It is a sulfur-containing ionic compound of sodium. Sodium has a positive charge while metabisulfite (S2O52-) has a negative charge. It is called Metabisulfite due to the presence of two S atoms.

2025年1月27日 · Sodium metabisulfite (chemical formula: Na2S2O5) appears as a white crystalline or powder solid with a slight sulfur odor. It is toxic upon inhalation and can strongly irritate skin and tissue. It can be decomposed to release toxic oxide fumes of sulfur and sodium upon high temperature.

2024年8月27日 · Sodium metabisulfite, Na2S2O5, is a white or slightly yellowish crystalline solid and very soluble in water. Metabisulphite is a powerful reducing agent that gives electrons to a variety of other substances. This property allows it to …

Sodium metabisulfite reagent grade, 97%; CAS Number: 7681-57-4; EC Number: 231-673-0; Synonyms: Sodium disulfite,Sodium pyrosulfite; Linear Formula: Na2S2O5 at Sigma-Aldrich