Features of Sodium Thiosulfate: 1, Chemical name: Sodium thiosulfate 2, H.S code: 2832800000 3, Molecular formula: Na2S2O3*5H2O  4, Molecular weight: 248.17  5, Properties: Monoclinic crystal, Melting point: 40-45degree, Relative density: 1.729(17degree).  6, Packing: 25kg, 50kg plastic woven bag, or following your demand. Application of Sodium Thiosulfate: Used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant. And decolor agent.  Specifications of sodium thiosulphate:

Item	Photographic grade	Industrial grade	Anhydrous grade
Appearance	colorless transparent crystal	colorless transparent crystal	white powder
Assay	≥ 99.00%	≥ 98.5%	≥ 97.0%
Water Insoluble matter	≤ 0.01%	≤ 0.03%	≤ 0.03%
Sulfide	≤ 0.001%	≤ 0.003%	≤ 0.001%
Fe	≤ 0.001%	≤ 0.003%	≤ 0.005%
PH	6.5~9.5	6.5~9.5	6.5~9.5
Water solution reaction	in accordance with the test	in accordance with the test	----
Granularity(g/g)	12~16	---	----