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Home ProductsSodium Sulfite Water Treatment

Na2SO3 97% Purity Sodium Sulfite Preservative Density 2.633 g /cm3 White Powder

Na2SO3 97% Purity Sodium Sulfite Preservative Density 2.633 g /cm3 White Powder

    • Na2SO3 97% Purity Sodium Sulfite Preservative Density 2.633 g /cm3 White Powder
    • Na2SO3 97% Purity Sodium Sulfite Preservative Density 2.633 g /cm3 White Powder
    • Na2SO3 97% Purity Sodium Sulfite Preservative Density 2.633 g /cm3 White Powder
  • Na2SO3 97% Purity Sodium Sulfite Preservative Density 2.633 g /cm3 White Powder

    Product Details:

    Place of Origin: Hunan
    Brand Name: Kemsky
    Certification: ISO 9001 SGS
    Model Number: sodium sulfite water treatment CAS No:7757-83-15

    Payment & Shipping Terms:

    Minimum Order Quantity: 1 metric ton
    Price: usd 510 per metric ton
    Packaging Details: 25 kgs bag,1000 kgs big bag
    Delivery Time: 5-8 days
    Payment Terms: T/T , L/C
    Supply Ability: 3000 tons per month
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    Detailed Product Description
    Name: SSA Sodium Sulfite CAS No:7757-83-15 Other Name: SSA Anhydrous Sodium Sulphite CAS No:7757-83-15
    Color: White Powder Usage: Industrial Use
    Packing: 25 Kgs Plastic Woven Bag/paper Bag Loading Capacity: 27 Tons Per Container

     

                          ANHYDROUS SODIUM SULFITE 96%                      FOR WATER TREATMENT 
     
     

    Applications

    Sodium sulfite is primarily used in the pulp and paper industry. It is used in water treatment as an oxygen scavenger agent, to treat water being fed to steam boilers to avoid corrosion problems,[2] in the photographic industry to protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions, in the textile industry as a bleaching, desulfurizing and dechlorinating agent and in the leather trade for the sulfitization of tanning extracts. It is used in the purification of TNT for military use. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate. It is used in other applications, including froth flotation of ores, oil recovery, food preservatives, and making dyes.
    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.

    Reactions

    Sodium sulfite forms a bisulfite adduct with aldehydes, and with ketones forms a sulfonic acid. It is used to purify or isolate aldehydes and ketones.
    Sodium sulfite (sodium sulphite) is a soluble sodium salt of sulfurous acid (sulfite) with the chemical formula Na2SO3. It is a product of sulfur dioxide scrubbing, a part of the flue-gas desulfurization process. It is also used as a preservative to prevent dried fruit from discoloring, and for preserving meats, and is used in the same way as sodium thiosulfate to convert elemental halogens to their respective hydrohalic acids, in photographyand for reducing chlorine levels in pools.
    Sodium Sulfite is a white crystal or powder with reducing property. Sodium sulfite exhibits bleaching, de-sulfurizing, and dechlorinating activities. This agent was used by food industry to help maintain the fresh appearance of food products. It is also a component in many drugs, which helps maintain their potency and stability. FDA has ruled sodium sulfite a new animal drug of low regulatory priority.

     
    Sodium sulfite 
    Other names 
    Hypo clear(photography) 
    E221 
    Identifiers 
    CAS Number· 7757-83-7
    3D model (JSmol)· Interactive image
    ChEBI· CHEBI:86477
    ChemSpider· 22845
    ECHA InfoCard100.028.929
    EC Number231-821-4
    E numberE221 (preservatives)
    PubChem CID· 24437
    RTECS numberWE2150000
    UNII· VTK01UQK3G
    InChI[show] 
    SMILES[show] 
    Properties 
    Chemical formulaNa2SO3
    Molar mass126.043 g/mol
    Appearancewhite solid
    Odorodorless
    Density2.633 g/cm3 (anhydrous)
    1.561 g/cm3 (heptahydrate) 
    Melting point33.4 °C (92.1 °F; 306.5 K) (dehydration of heptahydrate)
    500 °C (anhydrous) 
    Boiling pointDecomposes(separate (substances) into constituent elements)
    Solubility in water27.0 g/100 mL water (20 °C)
    Solubilitysoluble in glycerol insoluble in ammonia,chlorine
    log P-4
    Acidity (pKa)~9 (heptahydrate)
    Refractive index(nD)1.565
    Structure 
    Crystal structurehexagonal (anhydrous)
    monoclinic (heptahydrate) 
    Hazards 
    Safety data sheetICSC 1200
     

    Descriptive chemistry

    Sodium sulfite is decomposed by even weak acids, giving up sulfur dioxide gas.
    Na2SO3 + 2 H+ → 2 Na+ + H2O + SO2
    A saturated aqueous solution has pH of ~9. Solutions exposed to air are eventually oxidized to sodium sulfate. If sodium sulfite is allowed to crystallize from aqueous solution at room temperature or below, it does so as a heptahydrate. The heptahydrate crystals effloresce in warm dry air. Heptahydrate crystals also oxidize in air to form the sulfate. The anhydrous form is much more stable against oxidation by air.
     

    Na2SO3 97% Purity Sodium Sulfite Preservative Density 2.633 g /cm3 White Powder

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