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Sodium Metabisulfite (Food grade):

Molecular formula: Na2S2O5
The national standard: GB1893-2008;
Appearance: white or slightly yellow crystalline powder;
Packing: In 25kg net plastic lined plastic woven bags, or 1100kg net big bags;
Validity: 6 months from the date of production;

Specifications:

 Project

Indicators 

 Content(Na2S2O5), ω /%

  96.5

 Iron(Fe), ω /%

  0.003

Insoluble matter in water

 pass

 Heavy metal(Pb), ω /%

  0.0005

 Arsenic(As), ω /%

  0.0001


Usage:
A. Bleaching agent in the food industry: Such as maintaining the oxygen in the vegetable dehydration; bleaching and maintaining the freshness of stored fruits like plum, orange, mango, olive, tremella fuciformis, dried bamboo shoots, sweet potato, peanut, mushroom, etc.

B. Preservatives: Anticorrosion and sterilizing in the production of glazed fruit, canned food, beer and beverages.

C. Osteoporosis agent: Reducing the toughness of gluten and making cookies crisp.

Used as a mordant dyeing,fabric antichlor after bleaching,paper fiber bleaching agents,chemical medicine by reducing agent and sulfonating agent,non-ferrous metal ore-dressing agent,waste water treatment agent,tanning agent for leather industries,natural rubber coagulant,additiver for building materials.

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