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Home ProductsAnhydrous Sodium Sulphite

Pharmaceutical Sodium Sulfite Preservative, Sodium Sulfite Molecular Weight 126.03

Pharmaceutical Sodium Sulfite Preservative, Sodium Sulfite Molecular Weight 126.03

    • Pharmaceutical Sodium Sulfite Preservative, Sodium Sulfite Molecular Weight 126.03
    • Pharmaceutical Sodium Sulfite Preservative, Sodium Sulfite Molecular Weight 126.03
  • Pharmaceutical Sodium Sulfite Preservative, Sodium Sulfite Molecular Weight 126.03

    Product Details:

    Place of Origin: Hunan
    Brand Name: Kemsky
    Certification: ISO 9001
    Model Number: pharmaceutical industry sodium sulfite

    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: Pharmaceutical Industry Sodium Sulfite Other Name: Pharmaceutical Industry Anhydrous Sodium Sulphite
    Color: Pure White Crystal Dry Powder Shelf Life: 2 Years/24 Months
    Application: Bulk Agent Chemcial Packing: 25 Kgs Plastic Woven Bag/or As Required

    Anhydrous Sodium Sulfite

    [English name]:Sodium sulfite
    [Synonym]:Sulfur oxide, sodium sulfite

    [Molecular formula]:Na2SO3
    [Molecular weight]:126.03

    Fine anhydrous sodium sulfite

    Index First grade
    Sodium sulfite(Na2SO3), % ≥ 96.0
    (Fe), ‰ ≤ 0.0+86-5
    Water insoluble, % ≤ 0.03
    Free alkali(Na2CO3), %≤ 0.4

    Rough sodium sulfite

    Index Qualified product
    Appearance Grey powdery
    Sodium sulfite, % ≥ 65~70
    Sodium sulfate, % ≤ 10
    Water, % ≤ 20~15
    Other, % ≤ 5

    [Packing]:Fine anhydrous sodium sulfite in plastic woven bag, nwt 50kg/bag, Rough sodium sulfite plastic woven bag, nwt 40kg/bag.
    [Use]:Fine sodium sulfite is used in the pharmaceutical industry, dyes and production of paper making, tanning, dyeing and printing industry and food and so on. Sodium sulfite crude is used in paper making, cement production, such as water-reducing agent.


    sodium sulphite/ sodium sulfite


    Description of Sodium Sulfite:

    1.Purity: 96%,98%


    2.CAS no.: 7757-83-7


    3.MF: Na2SO3


    4.Appearance: White crytal powder




    (1) Industry Grade : Used in Dyeing and printing Industry , as dechlorinating agent and bleaching agent, in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.



    (2) Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In silage treatment as anti-fermentative. In starch and sweeteners production as bacteriostatic.



    (3) Photo Grade: In the photographic industry as component of developer bath.



    (4) Pharmaceutical Grade: pharmaceutical industry for the production of chloroform, benzene and formaldehyde phenylpropanoid Sulfone.


    Product Description



    Specification of Sodium sulfite for Industry Grade and Food Grade:


    Item Quality Index
    Industry Grade Food Grade
    Purity ( As Na2SO3) 96.0% min 98.0% min
    Sodium sulphate ( SO4) 2.0% max 1.2% max
    Chlorides ( As NaCL) 0.5% max 0.08% max
    Arsenic ( As ) - 0.0002% max
    Heavy metals ( As Pb ) - 0.0005% max
    Iron (Fe) 0.005% max 0.003% max
    Water insoluble 0.05% max 0.01% max



    Quality Standard(GB2967-2000)
    Items Company Standard
    Sodium sulfite(Na2SO3) %≥ 97
    Fe %≤ 0.003
    Water insoluble material %≤ 0.02
    Free alkali(Na2SO3) %≤ 0.1
    Na2SO4 %≤ 2.5
    NaCl %≤ 0.1



    1, should be stored closely in the shady, cool and dry warehouse under 30 centigrade


    2, package should be sealed without contacting with air, preventing becoming damp and deteriorated





    For health: it will decompose hydrogen sulfide in gastrointestinal tract, causing hydrogen sulfide poisoning; it will corrode skin and eyes


    For environment: it will pollute environment


    Usage & Applications:

    1, in the field of water treatment

    as the deoxidant of boiler water and oilfield flooding;

    as antichlor for municipal and industrial water;

    as the raw material for the production of sodium thiosulfate;

    as the stabilizer of viscose acetal fibre;

    as the bactericide of beer bottle.

    2, in food industry: as bleaching agent, preservative, bulking agent, antioxidant and for the medicine synthesis

    3, as analytical reagent, light dependent resistor materials and base solution of polarographic analysis

    4, as antioxygen of cosmetics, mainly for hair dye cosmetics

    5, as reducing agent of spice, dye and so on

    6, in textile industry: as bleacher and deoxidier for fabric

    7, in paper industry: as lignin removal agent



    Pharmaceutical Sodium Sulfite Preservative, Sodium Sulfite Molecular Weight 126.03




    6. Storage

    Sodium sulfite should be stored in a dry and cool place.


    7. Package

    Sodium sulfite is packed in net weight 25kg plastic woven bag with plastic inner bag.



    anhydrous sodium sulfite 96%minNa2SO3



    Contact Details

    Contact Person: Ms.xie

    Tel: +8613975090964

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