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White Crystalline / Sodium Sulfite Powder Photography Tech Grade EC No 231-821-4

White Crystalline / Sodium Sulfite Powder Photography Tech Grade EC No 231-821-4

    • White Crystalline / Sodium Sulfite Powder Photography Tech Grade EC No 231-821-4
    • White Crystalline / Sodium Sulfite Powder Photography Tech Grade EC No 231-821-4
    • White Crystalline / Sodium Sulfite Powder Photography Tech Grade EC No 231-821-4
  • White Crystalline / Sodium Sulfite Powder Photography Tech Grade EC No 231-821-4

    Product Details:

    Place of Origin: Hunan
    Brand Name: Kemsky
    Certification: ISO 9001 SGS
    Model Number: sodium sulfite SSA 97 min

    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 97 Min Other Name: Anhydrous Sodium Sulphite SSA 97 Min
    Color: White Crystalline Shelf Life: 24 Months / 2 Years
    Usage: Fruit Additive Packing: 25 Kgs Plastic Woven Bag

     

    SODIUM SULPHITE

    SODIUM SULFITE ANHYDROUS

    food additive seafood antioxidant

     

     
     
    sodium sulphite/ sodium sulfite
    Product Description
     
    Specification of Sodium sulfite for Industry Grade and Food Grade:
     

    ItemQuality Index
    Industry GradeFood Grade
    Purity ( As Na2SO3)96.0% min98.0% min
    Sodium sulphate ( SO4)2.0% max1.2% max
    Chlorides ( As NaCL)0.5% max0.08% max
    Arsenic ( As )-0.0002% max
    Heavy metals ( As Pb )-0.0005% max
    Iron (Fe)0.005% max0.003% max
    Water insoluble0.05% max0.01% max

     
     
    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.
     
    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.

    1. GradeFood grade
    2. Purity97%
    3.Molecular formulaNa2SO3
    5. CAS No7757-83-7
    6. HS CODE28321000
    7. EINECS No231-821-4
     

    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.
     

     

    Specification:

    Anhydyous sodium sulphite
    English nameAnhydyous sodium sulphite
    Molecular formulaNa2SO3
    Technical specificationsHigh purity gradeRefined gradePhotographic gradeIndustrial gradeIndustrial gradeIndustrial grade
    Sodium sulfiteSodium sulfiteSodium sulfiteHigh-class productHigh-class productFirst grade product
    Na2SO3 ≥ %989897989796
    Fe ≤ %0.00050.0020.0050.0030.0030.005
    Water insoluble ≤ %0.0050.010.050.020.020.03
    Free alkali ≤ %0.10.30.150.10.10.4
    Sodium sulfate ≤ %1.51.51.52.5
    Sodium chloride ≤ %0.0050.020.010.1
    Heavy metal on Pb≤ %0.0010.0020.002
    As ≤ %0.00010.0005
    Sodium thiosulfate ≤%0.010.020.03
    Aqueous solution appearanceQualifiedQualifiedQualified
    Reaction of silver nitrate ammonia solutionQualified
     

     
     

     

     
    Application:
    It is used in dyeing industry as deoxidizer and bleaching agent for a variety of cotton fabric treating and scouring, which can prevent fabrics from local oxidation and deterioration of fibre strength. In photographic industry it is used as a reagent. In organic industry it is used as reducing agent in production of m-phenylenediamine, 25 - bared oxazolone, amino salicylic acid, etc. Textile industry uses it as a stabilizer for synthetic fibre. Other applications include various uses in paper mills, electronic industry, water treatment, etc.

    Nature:
    White crystal or powder; no foul. Soluble in water, very slightly soluble in ethanol, almost insoluble in ether. White hexagonal prismatic crystals, soluble in water (0 ℃ 12.54g/100ml water; 80 ℃ when the 283g/100ml water), in 33.4 ℃ The maximum solubility of about 28% when the aqueous solution is alkaline, PH value is about 9 ~ 9.5 . Slightly soluble in alcohol, insoluble in liquid chlorine, ammonia. Easily oxidized in air sodium, when the temperature is decomposed into sodium sulfide. To strengthen the reducing agent, reacts with sulfur dioxide, sodium bisulfite, reacted with the acid salt.

    Details

     

    White Crystalline / Sodium Sulfite Powder Photography Tech Grade EC No 231-821-4

    Contact Details
    NINGBO SOURCECHEM CO.,LTD

    Contact Person: Ms.xie

    Tel: +8613975090964

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