Sodium Thiosulfate Pentahydrate 99% AR Grade Reagent
Colorless crystals or white particles. Odorless. Micro-tidal solution in humid air. It is weathered in dry air above 33 ° C, and it can melt when it is heated to 48 ° C and lose crystal water at 100 ° C, and decompose at higher temperatures. It can be dissolved in 0.5 parts of water, insoluble in ethanol. The aqueous solution slowly decomposes at normal temperature, and the decomposition rate is accelerated by heating. The aqueous solution is almost neutral and with pH about 6.5 to 8.0.
Redox titration. Microanalytical reagents. The cobalt is determined by spot analysis. Determination of blood sodium. A disaccharide iron urea medium or the like is prepared. Photographic fixer. Dechlorination agent.
Item of Analysis
Transparency of solution
Insoluble in water,%
Sulfate and Sulfite(as SO4) ,%
Heavy metals(as Pb),%
Not a hazardous substance or mixture.