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Sodium Metabisulfite

Sodium Metabisulfite

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Features:

Product Name: Sodium Metabisulfite
Chemical Names: Sodium metabisulfite; Sodium pyrosulfite; 7681-57-4; Sodium disulfite; Disodium pyrosulfite; Sodium metabisulphite; sodium pyrosulphite; Sodiummetabisulfite; Sodium bisulfite anhydrous; Natriummetabisulfit; Natrium pyrosulfit; sodiummetabisulphite; Sodium metasulfite
Molecular Formula: Na2S2O5 or Na2O5S2
Molecular Weight: 190.095 g/mol
CAS Number: 7681-57-4
Physical Description: White crystals or crystalline powder
Color: White to yellowish crystals or powder.
Odor: In the presences of traces of water, it develops an odor of sulfur dioxide
Melting Point: Greater than 302° F
Boiling Point: Decomposes
Solubility: Freely soluble in water, glycerol, ethanol and sodium bisulfite. Slightly soluble in alcohol.
Density: 1.4 g/cm³
Decomposition: Decomposes on heating with ultimate formation of sodium sulfate.

Uses:

It is used as a food preservative and as a laboratory reagent.