Customization: | Available |
---|---|
CAS No.: | 7775-14-6 |
Formula: | Na2o4s2 |
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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.
1.Q: How do you control the quality?
A: We have own quality control system, also can do any other Third-party test.
Our lab do the inspection for 10 years.
2. Q: What documents you provide for client ?
A: We provide COA, CO, MSDS, TDS, Commercial Invoice, Packing List follow your requirement.
3. Q: Do you provide sample?
A: Sure, we provide 1-2 kg free sample.
4. Q: When will i get your reply?
A: We ensure the fastest response, fastest service,E-mails will be replied with in 12 hours.
Our services
<1> Free samples for customer further evaluation before order and after production.
<2>Quality controlling throughout the production,inspection and shipment.
<3> Packing according to customers' requirements.
<4> the nearest port to customer site,very convenient for discharge
<5> Complete documents for customer customs clerance
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