Sodium Metabisulphite Properties, Molecular Formula, Applications - WorldOfChemicals

Sodium Metabisulphite Properties

Sodium Metabisulphite

Sodium Dithionate-Molecule 3D Struture
Molecule Structure Image



Sodium metabisulfite is an inorganic compound. It is used as a preservative and antioxidant in food. It may cause allergic reactions in those who are sensitive to sulfites, including respiratory reactions in asthmatics, anaphylaxis and other allergic reactions in sensitive individuals. It is commonly used in homebrewing and winemaking to sanitize equipment. It is used as a cleaning agent for potable water reverse osmosis membranes in desalination systems. It is also used to remove chloramine from drinking water after treatment. It is used in photography. It is also used as an excipient in some tablets, such as paracetamol.

Chemical Properties

Appearance White powder
CAS Number 7681-57-4
Density 1.48 g/cm3
EINECS Number 231-673-0
Melting Point >170 °C
Molar Mass 190.107 g/mol
Molecular Formula Na2O5S2
NFPA 704 H-2,F-0,R-0,C-NA
Other_Cations Potassium Metabisulfite
RTECS Number UX8225000
Related Compounds Sodium Dithionite;Sodium Thiosulfate;Sodium Sulfate
Solubility 54 g/100 ml
Synonyms Sodium Pyrosulfite;Sodium Disulfite;Sodium Metabisulfite;Sodium Pyrosulphite;Sodium Disulphite;SMBS