Colorless or slightly yellowish monoclinic crystal compound . 1, Chemical name: Sodium Thiosulfate 2, Structural formula: 3, Molecular formula: Na2S2O2·5H2O4, Molecular ... 25kg, 50kg plastic woven bag, or following your demand. 8, Uses: used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing ... blush preventive agent, and as a disinfectant. and decolor agent Sodium Thiosulfate