factory directly supply cas 7775-14-6 Na2S2O4 hydrosulfite de sodium
Chemical Formula: Na2O4S2
Appearance: White powder
Sodium dithionite, commonly known as sodium hydrosulfite, also known as sodium hyposulfate, is a strong reducing agent in two forms: dihydrate salt and anhydrous salt. Dihydrate is a slightly yellow flake like crystal with extremely unstable chemical properties, only present in alkaline solutions. When heated to a certain temperature, it is dehydrated and converted into anhydrous salts; Anhydrous salt is a white crystalline powder that exists stably when dried at room temperature.
| ITEM |
STANDARD |
| Hydrosulphite |
74% |
85% |
88% |
90% |
| Water insoluble |
0.3 max |
0.3 max |
0.1 max |
0.1 max |
| Sodium thiosulfate: Na2S2O3 |
1.4 max |
1.5 max |
1.3 max |
1.0 max |
| Sodium metabisulfite: Na2S2O5 |
5-7 |
5-7 |
5-7 |
5-7 |
| Sodium bisulfite:NaHSO3 |
0.5 max |
0.5 max |
0.5 max |
0.5 max |
| Sodium carbonate: Na2CO3 |
0.6-2 max |
0.6-2 max |
0.6-2 max |
0.6-2 max |
| Sodium formate: HCOONa |
0.5 max |
0.8 max |
0.5 max |
0.5 max |
1) It is for vat dyes staining the reducing agent, reducing hair bleaching agents, vat dyes printing auxiliaries, silk scouring and bleaching agent, dyeing agents and objects of the peel color dye vat cleaning agent in the textile industry.
2) It is used as a mechanical pulp, mechanical pulp mill hot and deinking pulp bleaching agent in pulp and paper industry.
3) As a bleaching agent is widely used to restore the kaolin bleaching; Fur whitening bleaching and restore; Bamboo products and straw products such as bleach.
4) It is used as a reducing agent in chemical industry.
Hebei Jinchangsheng Chemical Technology Co., Ltd. as a subsidiary of Jinzhou city Jinchangsheng chemical co., LTD, our office are located in Shijiazhuang city, Hebei province .
Our company is engaged in developing and manufacturing organic acid, Alcohol,Ester,Metal ingot.The research center is located in the High-Tech Development Zone in Shijiazhuang, covering an area of 1000 sq.
We have been in manufacturing and export for 19 years. Based on the principle of " Customer first, quality first", we have been through ISO quality systems. We also let SGS test product quality based on national standards and do our best to satisfy customers' multiple requirements. We have established a strict quality standard inspection system in material purchase, production process and product test. Standar inspection by quality manager is involved in each step such as packing, delivery, loading and shipping. Pursuing premium quality is the core activate of our developing and serving customers wholeheartedly is our eternal purpose!
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