Industrial anhydrous sodium sulfate are classified into three types according to it use:
Type I: Mainly used for synthesis of detergent and vinylon.
Type II: Mainly used in industries such as dye, glass and paper.
Type III: As industrial raw material for inorganic salts.
Provide protease and sodium metasillcate for the synthesis of washing powder.
[Hs Code]:28331000
[Technical Requirements]:
1.Appearance: the grade A products of both type I and type II should be white crystalline granules with no aggregation and no mechanical impurities.
2.Industrial anhydrous sodium sulfate should meet the following requirements:
Item Value
Type I Type II
Grade A Grade A
sodium sulfate content, NaSO4 %> 99.1 98.3
water insoluble substance %< 0.04 0.08
calcium and magnesium content (in Mg), %< 0.1 0.25
chloride content (in CL), %< 0.25 0.6
iron(Fe) content, %< 0.0015 0.008
moisture, %< 0.1 0.3
whiteness, %< 86 80
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