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Home ProductsSodium Sulfite Food Grade

Na2SO3 97% Purity Sodium Sulfite Anhydrous , Sodium Sulfite Cas No 7757 83 7

Na2SO3 97% Purity Sodium Sulfite Anhydrous , Sodium Sulfite Cas No 7757 83 7

    • Na2SO3 97% Purity Sodium Sulfite Anhydrous , Sodium Sulfite Cas No 7757 83 7
    • Na2SO3 97% Purity Sodium Sulfite Anhydrous , Sodium Sulfite Cas No 7757 83 7
    • Na2SO3 97% Purity Sodium Sulfite Anhydrous , Sodium Sulfite Cas No 7757 83 7
  • Na2SO3 97% Purity Sodium Sulfite Anhydrous , Sodium Sulfite Cas No 7757 83 7

    Product Details:

    Place of Origin: Hunan
    Brand Name: Kemsky
    Certification: ISO 9001 SGS
    Model Number: sodium sulfite SSA

    Payment & Shipping Terms:

    Minimum Order Quantity: 1 metric ton
    Price: usd 430 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: Sodium Sulfite SSA Other Name: SSA Anhydrous Sodium Sulphite
    Situation: Dry Powder White Crystalline Usage: Fruit Additive,antioxidant,stablizer
    Purity: Na2SO3, 97% CAS NO: 7757-83-7

     

    SODIUM SULPHITE

    SODIUM SULFITE ANHYDROUS

     

     

    Factory offer competitive price sodium sulfite na2so3 sodium sulfite anhydrous

    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 photography and for reducing chlorine levels in pools.

     

    Product Name: Sodium sulfite
    Synonyms: Sodium sulfite anhydrous;SODIUM SULFITE, EXSICCATED;SODIUM SULPHITE;anhydroussodiumsulfite;disodiumsulfite;exsiccatedsodiumsulfite;natriisulphis;natriumsulfid
    CAS: 7757-83-7
    MF: Na2O3S
    MW: 126.04
    Product Categories: Inorganic Chemicals;Inorganics;Water Ttreatment Chemicals;Analytical Reagents for General Use;Disulfide Bridge Cleavage Reagents;Denaturation;Synthetic Reagents;ACS GradeBiochemicals and Reagents;Synthetic Reagents;inorganic compound;Paper, glass, printing and dyeing
    Mol File: 7757-83-7.mol

     
    1.Grade Food grade
    2.Purity 97%
    3.Molecular formula Na2SO3
    5. CAS No 7757-83-7
    6. HS CODE 28321000
    7. EINECS No 231-821-4
     

    Packing : External packing is PP woven bag, Internal packing is PE bag,25 kgs, 50 kgs, 1000 kgs, and 1250 kgs bag packing.

    Storage & defence: Stored in cool and dry place, avoid moisture and heat. No breakage, No mixed with oxidant and toxic matter. The storage period is 6 month since the production date. It should be transported by clean car, with covering matter, avoid rain.

     

    Usage:

    The role of anhydrous sodium sulfite is extensive, it is in the pharmaceutical industry, paper making, leather tanning and dyeing industries and plant fiber bleaching, food, etc have a very important role. Addition of anhydrous sodium sulfite is also used to film developing, bleaching agents, printing and dyeing industry as a deoxygenation agent.

     

    Physical and chemical properties:
    White crystalline or powder form; triangular prism crystal shape; alkaline water solution with pH at 9 – 9.5; The highest water solubility is about 28% with temperature at 33.4°C. When exposed to air, it is oxidized to form sodium sulfate. When heated to high temperature, it decomposes to form sodium sulfide; Density: 2.633(15.4°C), Refractive Index: 1.565; Molecular Weight: 126.04.

     

    Chemical Properties

     

    melting point 500 °C
    density 2.63
    refractive index 1,484
    storage temp. Store at RT.
    solubility H2O: 1 M at 20 °C, clear, colorless
    Water Solubility 23 g/100 mL (20 ºC)
    Sensitive Hygroscopic
    Stability Stable. Incompatible with strong acids. Moisture and air sensitive.

    Technical specification

    Specification

    Index name

    Analytically pure-AR Chemical pure-CP High purity
    Content(Na2SO3) ≥97.0 ≥95.0 ≥96.0
    Clarity test Qualified Qualified  
    Water insoluble ≤0.005 ≤0.01 ≤0.03
    Sulphurous acid( counted by Na2HSO3 ) Qualified Qualified  
    Free alkali( counted by Na2CO3 ) ≤0.1 ≤0.3 ≤0.5
    Chloride(Cl) ≤0.005 ≤0.02 ≤0.05
    Thiosulfuric acid(S2O3) ≤0.01 ≤0.02 ≤0.04
    Ferrum(Fe) ≤0.0005 ≤0.002 ≤0.003
    Heavy metal(counted by Pb) ≤0.001 ≤0.002 ≤0.003
    Arsenic(As) ≤0.0001 ≤0.0005 ≤0.001
     

     

     

    Specification:

    Anhydyous sodium sulphite
    English name Anhydyous sodium sulphite
    Molecular formula Na2SO3
    Technical specifications High purity grade Refined grade Photographic grade Industrial grade Industrial grade Industrial grade
    Sodium sulfite Sodium sulfite Sodium sulfite High-class product High-class product First grade product
    Na2SO3 ≥ % 98 98 97 98 97 96
    Fe ≤ % 0.0005 0.002 0.005 0.003 0.003 0.005
    Water insoluble ≤ % 0.005 0.01 0.05 0.02 0.02 0.03
    Free alkali ≤ % 0.1 0.3 0.15 0.1 0.1 0.4
    Sodium sulfate ≤ % 1.5 1.5 1.5 2.5
    Sodium chloride ≤ % 0.005 0.02 0.01 0.1
    Heavy metal on Pb≤ % 0.001 0.002 0.002
    As ≤ % 0.0001 0.0005
    Sodium thiosulfate ≤% 0.01 0.02 0.03
    Aqueous solution appearance Qualified Qualified Qualified
    Reaction of silver nitrate ammonia solution Qualified
     

     

     

     

     

     

    Na2SO3 97% Purity Sodium Sulfite Anhydrous , Sodium Sulfite Cas No 7757 83 7

    Contact Details
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    Contact Person: Ms.xie

    Tel: +8613975090964

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