| Customization: | Available |
|---|---|
| CAS No.: | 7757-83-7 |
| Formula: | Na2so3 |
|
Still deciding? Get samples of US$ 350/Ton
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
PRODUCT DESCRIPTION
white fine crystal or powder, easily soluble in water; absorb moisture; odorless, non-toxic.
PRODUCT USAGE
[Purpose 1]
Used for microanalysis and determination of tellurium and niobium, preparation of developing solution, and as reducing agent
[Purpose 2]
Used as artificial fiber stabilizer, fabric bleach, photographic developer, deoxidizer for dyeing and bleaching, perfume and dye reducing agent, lignin remover for paper making, etc
[Purpose 3]
Used as common analytical reagent and photoresist material
[Purpose 4]
Reducing bleaching agent has bleaching effect on food and strong inhibition on oxidase in vegetable food. China stipulates that it can be used for candied fruits, with the maximum usage of 2.0g/kg; It can also be used for glucose, liquid glucose, sugar, crystal sugar, malt sugar, candy, bamboo shoots, mushrooms and canned mushrooms, grapes, and blackcurrant concentrated juice, with the maximum dosage of 0.60g/kg. Residues of bamboo shoots, mushrooms and canned mushrooms, candied fruits, grapes and blackcurrant concentrated juice (calculated by SO2) ≤ 0.05g/kg; Residual amount of potato starch ≤ 0.03g/kg; The residue of biscuits, sugar, vermicelli and other varieties is less than 0.1g/kg; The residual amount of liquid glucose shall not exceed 0.2g/kg.
[Purpose 5]
As a deoxidizer and bleacher, the printing and dyeing industry is used for the cooking of various cotton fabrics, which can prevent the local oxidation of cotton fibers and affect the fiber strength, and improve the whiteness of the cooked fabrics. The photographic industry is used as a developer. The organic industry is used as a reducing agent in the production of m-phenylenediamine, 2,5-dichloropyrazolone, anthraquinone 1-sulfonic acid, 1-aminoanthraquinone, sodium aminosalicylate, etc., which can prevent the oxidation of semi-finished products in the reaction process. Paper industry is used as lignin remover. The textile industry is used as a stabilizer for man-made fibers. The electronic industry is used to make photoresistors. The water treatment industry is used for the treatment of electroplating wastewater and drinking water.
[Purpose 6]
Food industry is used as bleaching agent, antiseptic, loosening agent and antioxidant. It is also used in pharmaceutical synthesis. It is used as a reducing agent in the production of dehydrated vegetables.
[Purpose 7]
It is used to produce cellulose sulfite ester, sodium thiosulfate, organic chemicals, bleached fabrics, etc., as well as reducing agent, preservative, dechlorination agent, etc.
| item | Superior products | First class products |
| Sodium sulfite (Na2SO3) content% ≥ | 97 | 93 |
| Iron (Fe) content% ≤ | 0.003 | 0.005 |
| Water insoluble content% ≤ | 0.02 | 0.03 |
| Free alkali (Na2SO3)% ≤ | 0.1 | 0.4 |
| Sulfate (Na2SO4) | 2.5 | - |
| Sodium chloride (NaCl)% ≤ | 0.1 |
Najin Import and Export (Shandong) Co., Ltd. is a comprehensive, diversified, and comprehensive company with BDO, PEG, PPG, PTMEG, MDI, TDI, PVA, NMP, and polyether polyols, polyester polyols, and polymer polyols as its main industrial chains. We have a professional sales team that has won recognition and praise from the industry with exquisite technology, sound administrative management, and good teamwork. The product is sold to multiple domestic and foreign enterprises.
We always adhere to the principle of "quality first, customer first, and reputation first", and are committed to providing customers with the best products. We will also continue to build a professional chemical product supply chain with the highest quality service, best products, and maximum efforts.
){kind=link}