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Food Additive SSA Sodium Sulfite Formula Na2SO3 White Power CAS No 7757 83 15

Food Additive SSA Sodium Sulfite Formula Na2SO3 White Power CAS No 7757 83 15

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Brand Name : Kemsky

Model Number : sodium sulfite preservative

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

situation : dry powder crystalline

usage : preservative

packing : 25 kgs plastic woven bag/1000 kgs jumbo bag

EINECS No : 231-821-4

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SODIUM SULFITE ANHYDROUS


We assure of the quality and stable supply, you can use our thiourea first and pay later, for details, please contact with us, thanks.

1. Any inquiries will be replied within 12 hours.
2. Dedication to quality, supply & service.
3. Strictly on selecting raw materials.
4. Reasonable & competitive price, fast lead time.
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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.


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.


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

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.


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.

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.





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sodium sulfite anhydrous

      

sodium sulfite preservative

      
 Food Additive SSA Sodium Sulfite Formula Na2SO3 White Power CAS No 7757 83 15 Manufactures

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