Sodium Sulfite

• CAS: 7757-83-7
• Catalog Number: ACM7757837
• Category: Other Products
• Molecular Weight: 126.04
• Molecular Formula: Na2O3S
• Description: Sodium sulfite is a white odorless powder. Density 2.633 g / cm³. Moderately toxic. Sinks in water and dissolves slowly. Also transported as a heptahydrate Na2SO3.7H₂O.;DryPowder; DryPowder, Liquid; Liquid; OtherSolid; PelletsLargeCrystals;White crystalline powder or colourless crystals;WHITE CRYSTALS OR POWDER.
• Synonyms: Sodium sulfite anhydrous;SODIUM SULFITE, EXSICCATED;SODIUM SULPHITE;anhydroussodiumsulfite;disodiumsulfite;exsiccatedsodiumsulfite;natriisulphis;natriumsulfid
• IUPAC Name: disodium; sulfite
• Canonical SMILES: [O-]S(=O)[O-].[Na+].[Na+]
• InChI: InChI=1S/2Na.H₂O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
• InChI Key: GEHJYWRUCIMESM-UHFFFAOYSA-L
• Boiling Point: Decomposes (NTP, 1992);Decomposes
• Melting Point: 500°C
• Density: 2.633
• Solubility: Soluble in 3.2 parts (NTP, 1992);In water, 30.7 g/100 g water at 25 °C;Soluble in 3.2 parts water;Soluble in glycerol; very slightly soluble in alcohol;Sparingly soluble in alcohol;Insoluble in ethanol;Insoluble in liquid chlorine, ammonia;Solubility in water, g/100ml at 20 °C: 22 (good)
• Appearance: White crystals or powder
• Assay: 0.99
• Autoignition Temperature: Not flammable (USCG, 1999)
• Color/Form: Small crystals or powder;White hexagonal crystals;White crystals or powder
• Complexity: 18.8
• Covalently-Bonded Unit Count: 3
• Decomposition: When heated to decomposition it emits very toxic fumes of Na2O /sodium oxide/ and SOx /sulfur oxides/.;600 °C
• EC Number: 231-821-4
• Exact Mass: 125.9363
• Formal Charge: 0
• Hazard Statements: Xn
• H-Bond Acceptor: 4
• H-Bond Donor: 0
• Heavy Atom Count: 6
• ICSC Number: 1200
• LogP: -4
• MDL Number: MFCD00003503
• Monoisotopic Mass: 125.9363
• Odor: Odorless
• Other Experimental: Density: 1.539. MP: decomposes; loses 7 H₂O at 150 °C /Sodium sulfite heptahydrate/;Efflorescent crystals. Unstable, oxidizing in air to sulfate. Soluble in 1.6 parts water, about 30 parts glycerol; sparingly soluble in alcohol. Aqueous solution is alkaline and dissolves sulfur; pH approximately 9 /Sodium sulfite heptahydrate/;Colorless, monoclinic crystals; demsity: 1.56 g/cu cm; solubility: 30.7 g/100 g water at 25 °C; slightly solluble in ethanol; unstable /Sodium sulfite heptahydrate/
• Packaging: 1 kg
• Physical State: White crystals or powder
• PubChem ID: 24437
• Refractive Index: 1.484
• Rotatable Bond Count: 0
• RTECS Number: WE2150000
• Safety Description: 24/25-36-26-22
• Stability: Stable. Incompatible with strong acids. Moisture and air sensitive.
• Storage Conditions: Store at RT.
• Supplemental Hazard Statements: H303
• UNII: VTK01UQK3G
• Vapor Pressure: Negligible (NTP, 1992)

Custom Q&A

What is the chemical formula for sodium sulfite?

The chemical formula for sodium sulfite is Na2SO3.

What is the molecular weight of sodium sulfite?

The molecular weight of sodium sulfite is 126.05 g/mol.

What are some synonyms for sodium sulfite?

Some synonyms for sodium sulfite include sodium sulphite, disodium sulfite, and sodium sulfite anhydrous.

What are the component compounds of sodium sulfite?

The component compounds of sodium sulfite are sulfurous acid (CID 1100) and sodium (CID 5360545).

What is the IUPAC name for sodium sulfite?

The IUPAC name for sodium sulfite is disodium;sulfite.

What is the InChIKey for sodium sulfite?

The InChIKey for sodium sulfite is GEHJYWRUCIMESM-UHFFFAOYSA-L.

What is the CAS number for sodium sulfite?

The CAS number for sodium sulfite is 7757-83-7.

What is the European Community Number for sodium sulfite?

The European Community Number for sodium sulfite is 231-821-4.

What are some properties of sodium sulfite?

Sodium sulfite has a molecular weight of 126.05 g/mol, a hydrogen bond donor count of 0, a hydrogen bond acceptor count of 4, and a rotatable bond count of 0.

How is sodium sulfite used in the food industry?

Sodium sulfite is used in the food industry as a food preservative and a reducing agent to help maintain the fresh appearance of food products.