Sodium Metabisulfite

Na₂S₂O₅

IUPAC: Disodium disulfite

CAS: 7681-57-4

Aperçu

Sodium metabisulfite is a powerful reducing agent and preservative used in wine making, food preservation, and water treatment.

Composition

Élément Symbole Atomes Masse atomique
Oxygen O 5 15,9990
Sodium Na 2 22,9900
Sulfur S 2 32,0600

Composition élémentaire

O
Oxygen ×5
42,1%
Na
Sodium ×2
24,2%
S
Sulfur ×2
33,7%

Usages

  • • Wine preservation
  • • Food antioxidant
  • • Water treatment
  • • Photography fixative

Le saviez-vous

  • ✦ Used by winemakers worldwide to prevent oxidation and bacterial spoilage

Sécurité

  • ⚠ Irritant
  • ⚠ Can trigger asthmatic reactions

Structure

SMILES

[O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]

Propriétés

Type
salt
État
solid
Masse molaire
190,11 g/mol
Densité
1,4800 g/cm³
Point de fusion
150,0 °C
Solubilité
540 g/L at 20°C

Molecular Descriptors

Exact Mass
189,8983
TPSA
125,0 Ų
H-Bond Donors
0
H-Bond Acceptors
6
Rotatable Bonds
0
Heavy Atoms
9
Complexity
136,0

Composés associés

Diammonium Phosphate

(NH₄)₂HPO₄

Ammonium Chloride

NH₄Cl

Barium Chloride

BaCl₂

Cadmium Sulfide

CdS

Calcium Sulfate

CaSO₄

Cerium(III) Chloride

CeCl₃

Copper(II) Sulfide

CuS

Ammonium Sulfate

(NH₄)₂SO₄

Ammonium Bicarbonate

NH₄HCO₃

Calcium Propionate

Ca(C₂H₅COO)₂

Frequently Asked Questions

What is Sodium Metabisulfite?
Sodium Metabisulfite (Na₂S₂O₅) is a salt compound with the IUPAC name Disodium disulfite.
What is the molecular weight of Sodium Metabisulfite?
Sodium Metabisulfite has a molar mass of 190.11 g/mol.
What state is Sodium Metabisulfite at room temperature?
Sodium Metabisulfite is a solid at room temperature.
Is Sodium Metabisulfite organic or inorganic?
Sodium Metabisulfite is classified as an inorganic compound.
What elements make up Sodium Metabisulfite?
Sodium Metabisulfite (Na₂S₂O₅) is composed of Oxygen (O), Sodium (Na), Sulfur (S).