sodium sulphate

sodium sulphate anhydrous: 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