Appearance:White powder or small crystalline particles Founction: 1>Bleaching agent for textile fibres; 2>Colors stripper and dechlorination; 3>Preparation of Indigo Vat Dye; 4>Solubilizing and acidyfing agent for leather industries; 5>Bleaching agent forpaper pulps; 6>Preservative and sterilisation agent for food industries. Package: 1>25kg /50kg compound plastic woven bag with inner polythene liner; 2>1000kg Jumbo bags; 3>Any other particular requirements to the package can be discussed. TECH GRADE FOOD GRADE NA2S2O5 >96.5% >97.0% SO2 >65% >65% FE