Sodium Hydrosulfite
Molecular Formula: Na2S2O4
CAS NO. : 7775-14 6
Risk Level: 4.2class
Application :
1. The textile industry for vat dyes stain reducing agent, reduction of hair bleaching agents, vat dyes printing auxiliaries, silk scouring and bleaching agent, dyeing properties of the stripping agent and dye vat cleaning agents.
2. Pulp and paper industry as a mechanical pulp, thermo mechanical pulp and de-inking pulp bleaching agents.
3. The food industry as sugar, candy, candied fruit, caramel, cookies, fans, etc. Bleach and food preservative.
4. Widely used as a reducing bleaching agent bleaching kaolin; fur whitening bleaching and reduction; bamboo and straw products, bleach and other products.
5. The chemical industry as a reducing agent .
Spec.
CommoditySodium HydrosulfiteMFNa2S2O4

ITEMS STANDARD
Na2S2O4(wt%)≥ 90.00%
Na2S2O5(wt%)≤ 7.5%
Na2CO3(wt%)≤ 6%
Na2S2O3(wt%)≤ 1%
Na2SO3(wt%)≤ 1%
Fe%(ppm)≤ 20
Water lnsoluble(wt%)≤ 0.05%
AppearanceWhite crystals powder