Home ProductsSodium Sulfite Food Grade

Seafood Anti-oxidant Anhydrous Sodium Sulfite Dechlorination Fruit Preservative

Seafood Anti-oxidant Anhydrous Sodium Sulfite Dechlorination Fruit Preservative

  • Seafood Anti-oxidant Anhydrous Sodium Sulfite Dechlorination Fruit Preservative
  • Seafood Anti-oxidant Anhydrous Sodium Sulfite Dechlorination Fruit Preservative
Seafood Anti-oxidant Anhydrous Sodium Sulfite Dechlorination Fruit Preservative
Product Details:
Place of Origin: Hunan
Brand Name: Kemsky
Certification: ISO 9001
Model Number: antioxidant 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
Contact Now
Detailed Product Description
Name: Antioxidant Sodium Sulfite SSA Other Name: Antioxidant Anhydrous Sodium Sulphite
Color: White Crystalline Powder Shelf Life: 12-24 Months
Usage: Fruit Preservative,antioxidant Mocular: Na2SO3
High Light:

sodium sulfite anhydrous


sodium sulfite preservative





Transportation Information:


DOT Classification: Not a DOT controlled material
U.N. Not applicable
Packing Group: Not applicable


Handing & Storage


(1).Precautions:Do not ingest. Do not breathe dust. Wear suitable protective clothing. If ingested, seek medical advice immediately and show the container or the label. Keep away from incompatibles such as oxidizing agents, combustible materials, organic materials, acids.


(2).Storage: Air sensitive. Moisture sensitive. Keep container tightly closed. Keep container in a cool, well-ventilated area.



l In 25kg bags

l 25MT/20’FCL.

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.



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


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


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.


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.


1, High quality with competitive price:Superiority

We are manufacturer and can provide high quality products with factory price.

2, Fast and safe delivery

1) Parcels can be sent out within 24 hours after payment. Tracking number is available.

2) Secure and discreet shipment. You have various choices of transportation methods.

3, We have clients throughout the world.

1) Professional service and rich experience make customers feel at ease, adequate stock and fast delivery meet your desire.

2) Market feedback and goods feedback are appreciated, meeting customers's requirement is our responsibility.

3) High quality, competitive price, fast delivery, first-class service gain the trust and praise from the customers.




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




Seafood Anti-oxidant Anhydrous Sodium Sulfite Dechlorination Fruit Preservative 0

Contact Details

Contact Person: Ms.xie

Tel: +8613975090964

Send your inquiry directly to us (0 / 3000)

Other Products