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Cas No 7757 83 7 Sodium Sulfite Food Grade Na2SO3 97% Purity For Pharmaceutical Industry

Cas No 7757 83 7 Sodium Sulfite Food Grade Na2SO3 97% Purity For Pharmaceutical Industry

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Brand Name : Kemsky

Model Number : antioxidant 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 : antioxidant sodium sulfite SSA

other name : antioxidant anhydrous sodium sulphite

hs code : 28321000

usage : fruit preservative,antioxidant, food grade

packing : 25 kgs plastic woven bag

CAS NO : 7757-83-7

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SODIUM SULPHITE

SODIUM SULFITE ANHYDROUS


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.


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.


Chemical Properties

melting point500 °C
density2.63
refractive index1,484
storage temp.Store at RT.
solubilityH2O: 1 M at 20 °C, clear, colorless
Water Solubility23 g/100 mL (20 ºC)
SensitiveHygroscopic
StabilityStable. Incompatible with strong acids. Moisture and air sensitive.

Technical specification

Specification

Index name

Analytically pure-ARChemical pure-CPHigh purity
Content(Na2SO3)≥97.0≥95.0≥96.0
Clarity testQualifiedQualified
Water insoluble≤0.005≤0.01≤0.03
Sulphurous acid( counted by Na2HSO3 )QualifiedQualified
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

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.

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.

Details

Basic information

Product Name:Sodium sulfite
Synonyms:Sodium sulfite anhydrous;SODIUM SULFITE, EXSICCATED;SODIUM SULPHITE;anhydroussodiumsulfite;disodiumsulfite;exsiccatedsodiumsulfite;natriisulphis;natriumsulfid
CAS:7757-83-7
MF:Na2O3S
MW:126.04
Product Categories:Inorganic Chemicals;Inorganics;Water Ttreatment Chemicals;Analytical Reagents for General Use;Disulfide Bridge Cleavage Reagents;Denaturation;Synthetic Reagents;ACS GradeBiochemicals and Reagents;Synthetic Reagents;inorganic compound;Paper, glass, printing and dyeing
Mol File:7757-83-7.mol


Superiority

1, High quality with competitive price:

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.


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



Product Tags:

sodium sulfite preservative

      

sodium sulfite oxygen scavenger

      
 Cas No 7757 83 7 Sodium Sulfite Food Grade Na2SO3 97% Purity For Pharmaceutical Industry Manufactures

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