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Crystalline Powder Antioxidant Sodium Sulfite Food Grade For Pharmaceutical Industry

Categories Sodium Sulfite Food Grade
Brand Name: Kemsky
Model Number: sodium sulfite
Certification: ISO 9001
Place of Origin: Hunan
MOQ: 1 metric ton
Price: usd 430 per metric ton
Payment Terms: T/T , L/C
Supply Ability: 3000 tons per month
Delivery Time: 5-8 days
Packaging Details: 25 kgs bag,1000 kgs big bag
name: sodium sulfite SSA
other name: anhydrous sodium sulphite
color: white
situation: crystalline powder
usage: food industry
packing: External packing is PP woven bag, Internal packing is PE bag,25 kgs, 50 kgs, 1000 kgs,
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    Crystalline Powder Antioxidant Sodium Sulfite Food Grade For Pharmaceutical Industry



    Store it in aeration and shady place . Not put it together with strong acids, oxidants. Avoid the
    wrappage being perforated and prevent from water and moisture when conveyed. Exposure to moisture
    will make it to be oxidized easily to release SO2. Do not store it for long time.


    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.
    Free alkali ≤ %
    Sodium sulfate ≤ %
    Sodium chloride ≤ %0.0050.020.010.1
    Heavy metal on Pb≤ %0.0010.0020.002
    As ≤ %0.00010.0005
    Sodium thiosulfate ≤%
    Aqueous solution appearanceQualifiedQualifiedQualified
    Reaction of silver nitrate ammonia solutionQualified
    1. GradeFood grade
    2. Purity97%
    3. Molecular formulaNa2SO3
    4. CAS No


    5. HS CODE28321000
    6. EINECS No231-821-4


    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.


    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.

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