It is primarily used in pulp and paper industry. It is used as an oxygen scavenger agent , in the photographic industry to protect developer solutions from oxidation, in textile industry as a bleaching, as a desulfurizing and as a dechlorinating agent and in leather trade for the sulfitization of tanning extracts. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate. It is use in other applications include ore flotation, oil recovery, food preservative, making dyes, and detergent. It is mainly used in medicine, tannage and tanning.
Sodium Sulfite Food Grade
WC Code: 19-047-02
Sales Specification
Appearance: White Powder
Na2S2O3: 97.0% Min
Sodium Sulphate: 2.5% Max
Iron (Fe): 0.002% Max
Water Insoluble: 0.02% Max
Free Alkali (Na2CO3): 0.3% Max
As: 0.0002% Max
Heavy Metal (Pb): 0.001% Max
Packing
Name: sodium sulfite
CAS NO :7757-83-7
Grade: industrial grade, food grade
Molecular formula : Na2SO3
Molecular weight: 126.04
Appearance : white crystalline powder
Quality standard: HG/T 29672000
Packing: Net Weight 25kg or 50kg/plastic woven sack with PE inner-bag, 20MT/20fªFCL
Sepcification:
Index name Premium grade
Super grade First grade Salable product Industrial grade
Sodium sulfite ( Na2SO3 ) , % fª 97.0 96.0 93.0 90.0
Fe , f_ 0.003 0.005 0.01 /
Water insoluble matter , % f_ 0.02 0.03 0.05 /
Free alkali ( as Na2SO3 ) , % f_ 0.10 0.40 0.60 /
Na2SO4 , % f_ 2.50 / / /
NaCl , % f_ 0.10 / / / .
Packing: double-layer plastic woven bag.
Uses: bleaching agent for paper pulps; waste water treatment; reducing and sulphonating agent for chemical synthesis; bleaching agent for textiles; color striper and deoxidization; floating agent for mining; auxiliary chemical in tanning process.
Packing: Net Weight 25kg or 50kg/plastic woven sack with PE inner-bag, 20MT/20fªFCL.
Item Super First Qualified
Purity (na2co3) 97.0%min. 96% min. 93.0%min.
Fe 0.003%max. 0.005%max. 0.01%max.
Water insolubles 0.02%max. 0.03% max. 0.05%max.
Free alkal 0.10%max. 0.40% max. 0.60%max.
Na2so4 2.5%max.
Nacl 0.10%max.
Uses: it is used as a desoxydating or bleaching agent for printing and dyeing industry, as a developer for photographic industry. As a lignin-removing agent for paper industry, as a stabilizer for synthetic fiber for textile industry, as a reducing agent for chemical industry, or for electroplating industry etc.
Product Description: "This product is one of Sebchem Key products
Some of our direct/ Indirect clients are ARAMCO, ADNOC, SCHLUMBERGER, BAKER HUGHES, CLARIANT, CHAMPION, GE, SUEZ, METITO, ECOLAB, MAPEI, SIKA, ARAMCO REFINERIES, SCOTT BADER, SYNTHOMER, IFFCO.
Sebchem providing its chemicals to our global clients in the Oil & Gas Upstream Oil & Gas Downstream, Petrochemicals, Industrial, Water Treatment, Construction, Detergent, Coating & Resin, Agro, Textile, Food. We supply chemicals IBCs, Drums, ISO Tanks, Bags, and up to Bulk Vessels"
Price of product ( USD price or FOB price): USD
Product origin: Multiple
Key Specifications/Special Features: "This is one of Key products of Sebchem given to Sebchem clinets across the World. Please contact our sales team or via our website for getting TDS, SDS, COA
"
CAS No. : 7757-83-7
Molecular formula: Na2SO3
Packing : 27 MT for 1x20 gp . 25 kgs packing .
application:
1. Anhydrous sodium sulfite is used for film development
2. Used as reducing agent and sulfonating agent in chemical industry;
3. Dechlorination agent and bleaching agent in printing and dyeing industry;
4. Stabilizers for chemical fibers, etc.
1>Bleaching agent for paper pulps ;
2>Waste water treatment
3>Reducing and sulfonating agent for chemical synthesis
4>Bleaching agent for textiles
5>Colors stripper and deoxidization ;
6>Floating agent for mining industry;
7>Auxiliary chemical in tanning process .
1>25kg/50kg compound plastic woven bag with inner polythene liner ;
2>1000kg Jumbo bags;
3>Any other particular requirements to the package can be discussed.
Varied range of sodium sulphite uses-
-In the production of pulp
-In the sulfidization of tanning extract
-In the production of shampoo and trinitrotoluene (TNT)
-An antichlor in water treatment
-A moderate reducing agent in the production of chemicals and drugs
-A preservative in natural latex rubber and photography
-An oxidant, enzyme inhibitor, and anti-microbial agent in the food industry
-As a solvent in the fibre industry.
Pulping agent
This product is used in the production of chemi-mechanical, chemi-thermomechanical and sulphite pulp. It is a white granular product that is readily soluble in water.
Oxygen scavenging and chlorine removal
This product is used in steam boiler water treatment to remove dissolved oxygen and to remove excess chlorine from wastewater. It is a white granular product that is readily soluble in water.
Solubilizing agent
This product is used as a solubilizing agent in vegetable tanning. It is a white granular product that is readily soluble in water.
Reducing and sulfonating agent
This product is used as a sulfonating agent and reducing agent in chemical process with significant applications for surfactants and polymerization. It is a white granular product that is readily soluble in water.
Reducing agent for dyes
This product is used in the textile industry as as reducing agent for dyes. It is a white granular product that is readily soluble in water.
Chrome and metals reduction
This product is used to reduce chrome and other metals. It is a white granular product that is readily soluble in water.
Product data and typical properties
Formula: Na2SO3Molecular
Weight: 126.04pH of 5% Solution: 10.1
Bulk Density, lb/ft3: 95
Odorless free flowing, white to pale yellow granular crystal that is soluble in water.
Sodium sulfite, an inorganic substance with chemical formula Na2SO3, is a sulfite, which is soluble in water and insoluble in ethanol. Insoluble in liquid chlorine and ammonia. It is mainly used as artificial fiber stabilizer, fabric bleaching agent, photographic developer, dye bleaching deoxidizer, perfume and dye reducing agent, papermaking lignin removing agent, etc.
Product implementation standard HG/T2967-2010.
