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ISO 9001 97% Purity Sodium Sulfite Oxygen Scavenger Industrial Grade Na2SO3

ISO 9001 97% Purity Sodium Sulfite Oxygen Scavenger Industrial Grade Na2SO3

  • ISO 9001 97% Purity Sodium Sulfite Oxygen Scavenger Industrial Grade Na2SO3
  • ISO 9001 97% Purity Sodium Sulfite Oxygen Scavenger Industrial Grade Na2SO3
ISO 9001 97% Purity Sodium Sulfite Oxygen Scavenger Industrial Grade Na2SO3
Product Details:
Place of Origin: Hunan
Brand Name: Kemsky
Certification: ISO 9001
Model Number: sodium sulfite 97% leather tanning
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: 97% Leather Tanning Sodium Sulfite Other Name: 97% Leather Tanning Anhydrous Sodium Sulphite
Inspection: SGS. BV Grade: Tech Grade
Usage: 97% Leather Tanning, Deoxidant And Bleaching Agent For Printing & Dyeing Industry Packing: 50kg/500kg/1000kg Flexible Freight Bag,
High Light:

sodium sulfite anhydrous msds


sodium sulfite water treatment

 Sodium Sulfite anhydrous Na2SO3



Test Items Specification Result
Na2SO3 % 97min 97.1
Fe % 0.005max 0.003
Free alkali % 0.1max 0.1
Water insolubles % 0.02max 0.01

Packing & Delivery

PACKING: 25kg pp bag, 27mt per container; 1200kg jumbo bag, 24mt per 20GP
DELIVERY: 10-15 days after received your prepayment or original LC

Quality Control

Once the cargo is ok, we will take the sodium sulfite anhydrous to test first. if it is qualified, we will arrange the cargo to the customers. If not, we will reproduce the cargo. When loading, we will take the sodium sulfite anhydrous pics, empty containers-half loading containers-full containers-half door closed-all doors closed.

Molecular Formula : Na2SO3

CAS NO : 7757-83-7

EC NO : 231-821-4



Synonyms : Sodium sulfite anhydrous;Sodium sulphite;anhydrous sodium sulfite;Sodium sulfite ,anhydrous;


Main Specifications :



Product description:

Product Name: Sodium sulfite anhydrous
CAS NO: 7577-83-7
Molecular Formula: Na2SO3
Item Grade
Best quality First quality Qualifier
Sodium sulfite (Na2SO3) Assay, % ≥ 97.0 ≥ 96.0 ≥ 93.0
Fe, % ≤ 0.003 ≤ 0.005 ≤ 0.02
Insol. in water, % ≤ 0.02 ≤ 0.03 ≤ 0.05
Free alkali (Na2SO3) Assay, % ≤ 0.10 ≤ 0.40 ≤ 0.80
Sulphate (Na2SO4) Assay, % ≤ 2.5
Chlorides (NaCl) Assay, % ≤ 0.10  


Packing: 25kg plastic woven bag, 50kg/500kg/1000kg flexible freight bag, or upon clients' demand.
Specifications: white crystal or powder; pH of aqueous solution: 9-9.5, At 33.4oC,it solubility is 28%. Density: 2.633(15.4oC), refracitive index: 1.565; Molecular weight126.04.
H.S code: 283210
Use: Used as deoxidant and bleaching agent for printing & dyeing industry; also used for paper making, electronic and water treatment industries.





It's white crystal or powder, no foul. Soluble in water (When 0 degree, 12.55g/100ml water; When 80 degree,283g/100ml water), at 33.4 degree the maximum solubility of about 28%, the aqueous solution is alkaline. Slightly soluble in alcohol, insoluble in liquid chlorine, ammonia. Easily oxidized in air into sodium, when the temperature is decomposed into sodium sulfide. As a strong reducing agent, it reacts with sulfur dioxide into sodium bisulfate, and with strong acid into corresponding salts.

anhydrous sodium sulfite granular



White monoclinic system crystalline powder. Soluble in water, alkaline aqueous solution. Soluble in glycerin, insoluble in ethanol.

Sodium sulfite Application:

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.


Medicine, used as salting-out agent, coagulant, also used in paper, glass, printing and dyeing, synthetic fiber, leather and other industries

Mainly used as synthetic detergent filling material. Papermaking industry used in the manufacture of sulfate pulp cooking agent. Glass industry to replace soda ash. Used for manufacturing sodium sulphide, sodium silicate and chemical industry raw materials of other chemical products. Textile industry is used to allocate vinylon spinning coagulation bath. Pharmaceutical industry is used as the delay evacuant. Also used in non-ferrous metallurgy, leather, etc.




ISO 9001 97% Purity Sodium Sulfite Oxygen Scavenger Industrial Grade Na2SO3 0





Contact Details

Contact Person: Ms.xie

Tel: +8613975090964

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