Industry grade, white powder Na2O4S2 90%88%85% sodium hydrosulfite
|FOB Unit Price:||US $880 US $850|
|Purchase Qty. (Tons)||FOB Unit Price|
|Production Capacity:||1000 Metric Ton / Month|
|Payment Terms:||L/C, T/T, Western Union|
- Model NO.: Industry Grade
- Appearance: Powder
- Colour: White
- CAS No: 7775-14-6
- MF: Na2O4S2 (Sodium Dithionite)
- Trademark: XC
- Specification: SGS
- HS Code: 2831105000
- Type: Dyestuff Intermediates
- Quality: Industrial
- Chemical Name: sodium hydrosulfite
- EINECS No.: 231-890-0
- Stability: Stable under ordinary conditions (Decomposes in h
- Transport Package: 50kg/drum
- Origin: China (Mainland)
Sodium Hydrosulfite is a white powder. Commercial sodium hydrosulfite contains 85% - 90% sodium dithionite w/w. It is readily soluble in water and shows powerful reducing action in aqueous solutions. Sodium hydrosulfite is used as a reducing agent in dying application. It undergoes reduction reaction with water-insoluble vat dye and sulfur dye to form water-soluble alkali metal salt of the dye (leuco form ) so that they have affinity for the textile fiber.
Specification of Sodium Hydrosulfite:
|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|
Pic show of the Sodium Hydrosulfite:
Application of Sodium Hydrosulfite
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) It is used as sugar, candy, candied fruit, caramel, cookies, fans, etc. Bleach and food preservation agent in the food industry.
4) 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.
5) It is used as a reducing agent in chemical industry.
Packing details: 50kg/drum, or 25kg/bag, as required
Delivery: Within15 working days after receiving the deposit