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indigo powder

" found 2 Products from Changsha Weichuang Chemical Co., LTD, China

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93% 96% Food Grade Sodium Sulfite

93% 96% Food Grade Sodium Sulfite
1.Physical appearance:white or slightly yellowish crystalline powder 2.Application Bleaching agent for textile fibres, colors stripper and dechlorination, Preparation of Indigo Vat Dye, ...

White Powder Food Grade Sodium Metabisulphite

White Powder  Food Grade   Sodium Metabisulphite
1.Product Specification TECH GRADE FOOD GRADE NA2S2O5 >95.0% >97.0% SO2 --------- >65% FE <0.005% <0.005% WATER INSOLUBLE --------- <0.05% HEAVY METAL(PB) ---------- <0.001% AS <0.0002% ...
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