CAS 7681-57-4

Pirosolfito di sodio

Descrizione:

Pirosolfito di sodio, noto anche come metabisolfito di sodio, è un composto inorganico con la formula chimica Na2S2O5. Si presenta come una polvere cristallina bianca o giallastra ed è altamente solubile in acqua, producendo una soluzione che è acida per natura. Questo composto è comunemente usato come conservante e antiossidante nelle industrie alimentari e delle bevande, in particolare nel vino e nella frutta secca, grazie alla sua capacità di inibire la crescita microbica e l'ossidazione. Pirosolfito di sodio rilascia anidride solforosa quando disciolto in acqua, il che contribuisce alle sue proprietà conservanti. Inoltre, trova applicazioni in vari processi industriali, tra cui fotografia, produzione tessile e come agente riducente nelle reazioni chimiche. Sebbene generalmente considerato sicuro in quantità regolate, l'esposizione a concentrazioni elevate può causare irritazione respiratoria e reazioni allergiche in individui sensibili. Una corretta manipolazione e conservazione sono essenziali per mitigare eventuali rischi potenziali associati a questo composto.

Formula: H₂O₅S₂·2Na

InChI: InChI=1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)

InChI key: InChIKey=ZBVPOSMABOMSMZ-UHFFFAOYSA-N

SMILES: S(S(=O)O)(=O)(=O)O.[Na]

Sinonimi:

• Campden Tablets
• Colorstrip Catalyst 100
• Dinatriumdisulfit
• Disodium Disulphite
• Disodium disulfite
• Disodium metabisulfite
• Disodium pyrosulfite
• Disodium pyrosulfite (Na2S2O5)
• Disodium pyrosulfite (Na₂S₂O₅)
• Disulfite de disodium
• Disulfito De Disodio
• Disulfurous acid, sodium salt (1:2)
• E 223
• Fertisilo
• NSC 158277
• NSC 227243
• Natriumdisulfite
• Natriummetabisulfit
• Pyrosulfurous acid, disodium salt
• Sobis
• Sobisu
• Sodium Disulfite
• Sodium Metabisulfite
• Sodium Metabisulphite AR (1LB/BT)
• Sodium disulfite (Na2S2O5)
• Sodium disulfite (Na₂S₂O₅)
• Sodium metabisulfite (Na2S2O5)
• Sodium metabisulfite (Na₂S₂O₅)
• Sodium metabisulphite
• Sodium pyrosulfite
• Sodium pyrosulfite (Na2S2O5)
• Sodium pyrosulfite (Na₂S₂O₅)
• Sodium sulfur oxide (Na₂S₂O₅)
• Sodium disulphite
• Sodium pyrosulphite
• Sodium Metabisulfite (Food Grade)
• Disulfurous acid, disodium salt
• disodium oxidosulfanesulfonate oxide
• Metabisulfite Sodium

Sodium metabisulfite, ACS, 97% min

CAS: 7681-57-4

Sodium metabisulfite is used as an active ingredient in campden tablets, as a cleaning agent for potable water reverse osmosis membranes, as a preservative and an antioxidant in food. It also acts as a corrosion inhibitor in oil and gas industry, as a bleaching agent in the production of coconut cr

Formula: Na₂O₅S₂

Purezza: 97%

Peso molecolare: 190.09

Ref: 02-040115

Sodium metabisulfite, 97%

CAS: 7681-57-4

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci

Formula: Na₂O₅S₂

Purezza: 97%

Colore e forma: White to pale cream or pale yellow, Crystals or powder or crystalline powder

Peso molecolare: 190.09

Ref: 02-A17351

Sodium metabisulfite, SO{2} 58.5% min

CAS: 7681-57-4

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci

Formula: Na₂O₅S₂

Peso molecolare: 190.09

Ref: 02-033375

Sodium Metabisulfite

CAS: 7681-57-4

Sodium sulfites

Formula: Na₂S₂O₅

Colore e forma: White Powder

Peso molecolare: 189.89825

Ref: 45-1614396

Sodium metabisulfite

CAS: 7681-57-4

Formula: Na₂O₅S₂

Purezza: 96%

Colore e forma: Solid

Peso molecolare: 190.1065

Ref: IN-DA0035LQ

Sodium metabisulfite

CAS: 7681-57-4

Formula: Na₂O₅S₂

Purezza: ≥ 95.0%

Colore e forma: White to off-white crystalline powder

Peso molecolare: 190.10

Ref: 7W-GK1356

Sodium metabisulfite

CAS: 7681-57-4

Sodium metabisulfite

Formula: HO₃S·Na

Purezza: ≥95%

Colore e forma: white crystalline powder

Peso molecolare: 104.06g/mol

Ref: 54-IN3247

Sodium metabisulfite

CAS: 7681-57-4

Purezza: 97.0%

Colore e forma: Solid, Crystalline Powder or Powder

Peso molecolare: 190.08999633789062

Ref: 10-F044703

Sodium Metabisulfite

CAS: 7681-57-4

Formula: Na·O₅S₂

Colore e forma: Off-White

Peso molecolare: 190.11

Ref: TR-S667060

Sodium Metabisulphite extrapure AR, 98%

CAS: 7681-57-4

Formula: Na₂S₂O₅

Purezza: min. 98%

Colore e forma: White, Crystalline compound, Clear, Colourless

Peso molecolare: 190.10

Ref: SR-21705

Sodium Metabisulphite extrapure AR, ACS, ExiPlus, Multi-Compendial, 98%

CAS: 7681-57-4

Formula: Na₂S₂O₅

Purezza: min. 98%

Colore e forma: White, Crystalline powder, Clear, Colourless

Peso molecolare: 190.10

Ref: SR-52693

Sodium Disulfite

CAS: 7681-57-4

Formula: H₂O₅S₂·Na

Peso molecolare: 146.13 22.99

Ref: 4Z-S-175004

Sodium metabisulfite

CAS: 7681-57-4

Sodium metabisulfite is a preservative used to inhibit microbial growth in food and drinks. This chemical has been shown to cause bronchoconstriction in animals, but the mechanism for this effect is not well understood. Sodium metabisulfite may also cause anaphylactic reactions in humans. There are no toxicity studies available for sodium metabisulfite injection solutions, but it has been shown that anhydrous sodium metabisulfite can be toxic at high doses. The effects of sodium metabisulfite on human cells have been studied using a surface methodology and cytotoxicity assay. These experiments showed that sodium metabisulfite significantly reduced cellular viability and had significant cytotoxic effects on cells. The mechanism of this cell death was found to be due to the enzyme activity of sulfite oxidase, which produces hydrogen peroxide as a by-product. This hydrogen peroxide causes oxidative stress and leads to the production of reactive oxygen species (ROS) that induce DNA damage

Formula: Na₂S₂O₅

Purezza: Min. 97%

Colore e forma: Powder

Peso molecolare: 190.11 g/mol

Ref: 3D-FS40910