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Sodium Hydrosulfite

Description

Product Name Sodium  Hydrosulphite
CAS NO 7775-14-6
HS Code 2831101000
EINECS NO 231-890-0
Formular Na2S2O4

Sodium Hydrosulphite Specification

       ITEM STANDARD
Sodium 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

Sodium Hydrosulphite Application

  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 colour dye vat cleaning agent in the textile industry.
  2. It is used as mechanical pulp, mechanical pulp mill hot and deinking pulp bleaching agent in the 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 the chemical industry.

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