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Stabilizer Agent Sodium Sulfite Food Grade SSA For Fruit Additive / Industrial Use

Stabilizer Agent Sodium Sulfite Food Grade SSA For Fruit Additive / Industrial Use

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Brand Name : Kemsky

Model Number : sodium sulfite food grade and tech grade

Certification : ISO 9001 SGS

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 food grade and tech grade

other name : food grade and tech grade anhydrous sodium sulphite

color : white crystalline

grade : food grade and tech grade, first grade

usage : fruit additive,industrial use

CAS NO : 7757-83-7

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SODIUM SULPHITE

SODIUM SULFITE ANHYDROUS

FOOD AND TECH GRADE


Application

Pulp and paper industryLignin removal agent
Water treatmentOxygen scavenger agent.
Photographic industryTo protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions.
Textile industryBleaching, desulfurizing and dechlorinating agent
Chemical manufacturingSulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate.
Leather tradeThe sulfitization of tanning extracts
Other applications

l froth flotation of ores
l oil recovery
l food preservatives
l making dyes
l It is used in the purification of TNT for military use.


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.


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

1.GradeFood grade
2.Purity97%
3.Molecular formulaNa2SO3
5. CAS No7757-83-7
6. HS CODE28321000
7. EINECS No231-821-4



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.

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Product Tags:

sodium sulfite anhydrous

      

sodium sulfite oxygen scavenger

      
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