... 99% is used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent.1.Another name: Sodium thiosulfate 2. Molecular formula: Na2S2O3 ... , leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant. and decolor agent 6.Packing:25kg , 50kg plastic woven bag, or ...