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保险粉
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保险粉

 

Formula:Na2S2O4
Description:Free-flowing white crystalline powder with a slight odor of sulfur dioxide
Analysis:(for reference only)
Grade                              90%Grade       88%Grade         85% grade
Na2S2O4                              90%                  88%                   85%
Fe                                        20ppm              20ppm                20ppm
Zn                                         1ppm                1ppm                 1ppm
other heavy metal(as Pb)     1ppm                 1ppm                1ppm
water insolubles                  0.05%               0.05%                 0.05%
Uses:vat dyeing, printing and stripping , reduction cleaning, leaching textile materials such as silk,wool, nylon and other fibres bleaching mechanical pulps ,thermo-mechanical pulps, deinked pulps bleaching kaolin bleaching foodstuffs like sugar, honey , gelatin etc . Reducing agent for organic synthesis and pharmaceuticals.