Sodium Thiosulfite(HYPO) be usde in metallurgy,papermaking,oil,textail,soap ect. best quality&competitive price free sample 1.Other Names:Sodium Thiosulphate, Hypo.Hyposulphite of Soda2.Formula : Na2S2O3·3.M.W. : 48.24.Packing: 25kg/bag PP/PE5. Use: Used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant. And ...