钠、硫代硫酸

Application: used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant. and decolor agent Shelf Life : one year Storage & handling:Store the product in a cool and dry place prevent from direct sunlight , water and moisture avoid contact with strong acid,oxidants .Do not stores it for long time. Product Specification: Photo grade Tech grade Anhydrous appearance Colorless transparent crystal Colorless transparent crystal White powder Na2S2O3 > 99.0% > 98.5% > 97.0% Water insoluble matter < 0.01% < 0.03% < 0.03% sulfide < 0.001% < 0.003% < 0.001% iron < 0.001% < 0.003% < 0.005% PH 6.5-9.5 6.5-9.5 6.5-9.5 Water solution reaction Pass test Pass test Granularity(g/g) 12-16 .