CAS 7757-83-7

Sulfito de sodio

Descripción:

Sulfito de sodio, con la fórmula química Na2SO3 y número CAS 7757-83-7, es un compuesto inorgánico caracterizado por su apariencia cristalina blanca y naturaleza higroscópica, lo que significa que puede absorber humedad del aire. Es soluble en agua, formando una solución ligeramente alcalina. Sulfito de sodio se utiliza principalmente como conservante y antioxidante en alimentos y bebidas, así como en diversas aplicaciones industriales, incluyendo el tratamiento de agua y el proceso de fabricación de papel. Actúa como agente reductor, lo que lo hace valioso en la síntesis química y la fotografía. El compuesto puede liberar dióxido de azufre cuando se calienta o cuando reacciona con ácidos, lo cual es una consideración importante en el manejo y almacenamiento. Sulfito de sodio se considera generalmente seguro en bajas concentraciones, pero la exposición a niveles altos puede causar irritación en el sistema respiratorio y la piel. Se deben tomar las medidas de seguridad adecuadas al manejar este compuesto para evitar riesgos potenciales para la salud.

Fórmula: H₂O₃S·2Na

InChI: InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)

Clave InChI: InChIKey=YKZJGZHPDUVUKN-UHFFFAOYSA-N

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

Sinónimos:

• Anhydrous sodium sulfite
• Disodium sulfite
• Disodium sulfite (Na2SO3)
• Disodium sulfite (Na₂SO₃)
• E 221
• Natriumsulfit
• S-Wat
• Sodium Sulfite Anhydrous
• Sodium Sulphite
• Sodium sulfite
• Sodium sulfite (Na2SO3)
• Sodium sulfite (Na₂SO₃)
• Sulfite de sodium
• Sulfito De Sodio
• Sulfurous acid, sodium salt (1:2)
• Sulphurous acid, sodium salt (1:2)
• Sulfurous acid, disodium salt

Sodium sulfite, ACS, 98.0% min

CAS: 7757-83-7

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

Fórmula: H₁₄Na₂O₁₀S

Pureza: 98.0%

Peso molecular: 252.14

Ref: 02-013454

Sodium sulfite, anhydrous, 98%

CAS: 7757-83-7

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

Fórmula: H₁₄Na₂O₁₀S

Pureza: 98%

Forma y color: White to pale yellow, Crystalline powder or crystals

Peso molecular: 252.14

Ref: 02-A17933

Sodium Sulfite Anhydrous

CAS: 7757-83-7

Pureza: 98.0%

Forma y color: Solid

Peso molecular: 126.04000091552734

Ref: 10-F044726

Sodium sulfite

CAS: 7757-83-7

Fórmula: Na₂O₃S

Pureza: 97%

Forma y color: Solid

Peso molecular: 126.0427

Ref: IN-DA0036IA

Sodium sulfite, anhydrous

CAS: 7757-83-7

Fórmula: Na₂SO₃

Pureza: 98.0 - 102.0 % (dried basis)

Forma y color: White crystalline powder

Peso molecular: 126.04

Ref: 7W-GE2515

Sodium sulfite, anhydrous, 98+% (ACS)

CAS: 7757-83-7

Sodium sulfite, anhydrous, 98+% (ACS)

Fórmula: Na₂SO₃

Pureza: 98+%

Forma y color: white pwdr.

Peso molecular: 126.04

Ref: 08-93-1184

Sodium Sulfite

CAS: 7757-83-7

Applications Sodium sulfite is mainly used for the manufacture of detergents and in the Kraft process of paper pulping. Sodium sulfite is also used as a fining agent, to help remove small air bubbles from molten glass, in the glass industry.
References Brooks, M., et al.: Chem. Eng. Res. Des., 84, 139 (2006); Evans, J., et al.: Paper Trade J., 143, 42 (1959); Skvara, F.: Chemicky Prumysl, 28, 425 (1978)

Fórmula: Na₂O₃S

Forma y color: White To Off-White

Peso molecular: 126.04

Ref: TR-S689135

Sodium sulfite hydrate

CAS: 7757-83-7

Sodium sulfite is a salt that is used as a food additive and in the chemical industry. It has been used to study the toxicity of sodium salts and their effect on the cardiovascular system. Sodium sulfite is also used as a diagnostic agent in ethylene diamine tests, which are used to detect fatty acid levels in blood serum. The process optimization of sodium citrate production has been studied using sodium sulfite heptahydrate. Hydrochloric acid can be used to remove sulfur dioxide from sodium sulfite heptahydrate, producing anhydrous sodium sulfate. Sodium carbonate can be produced by adding water to anhydrous sodium sulfate, forming a solution of hydrogen ions and hydroxide ions. Sodium carbonate can also be produced through the reaction of anhydrous sodium with carbon dioxide gas or calcium oxide. Hydrogen bonds between molecules may be disrupted by adding hydrochloric acid to anhydrous sodium sulfate, leading to the formation of diphenyl ether

Fórmula: Na₂SO₃•(H₂O)x

Pureza: (%) Min. 98%

Forma y color: Powder

Peso molecular: 126.04 g/mol

Ref: 3D-KAA10215

Sodium Sulphite Anhydrous extrapure AR, ACS, ExiPlus, Multi-Compendial, 98%

CAS: 7757-83-7

Fórmula: Na₂SO₃

Pureza: min. 98%

Forma y color: White, Crystalline powder, Clear, Colourless

Peso molecular: 126.04

Ref: SR-29814

Sodium Sulphite Anhydrous extrapure AR, 98%

CAS: 7757-83-7

Fórmula: Na₂SO₃

Pureza: min. 98%

Forma y color: White, Crystalline powder, Clear, Colourless

Peso molecular: 126.04

Ref: SR-32246