Sodium thiosulfate, sodium hyposulphite)
Product introduction
Model ?25 / bag of origin: guangzhou zengcheng
Use level of industrial-grade levels above 98 (%)
Transparent crystal granularity of implement quality standard gb (mesh)
[ product performance and advantages ] colorless monoclinic system crystalline. Odourless, have cool and refreshing with a bitter taste. Relative density 1.729 (17 ℃). Melting point of 40-50 ℃. Heated to 100 ℃ lost five water of crystallization. Soluble in water, and nearly neutral aqueous solution. Is dissolved in turpentine oil and ammonia. Insoluble in alcohol. Deliquescence in moist air. Easy weathering in dry air more than 33 ℃. Has a reducing, can dissolve halogen and silver halide.
Quality indicators
Sodium thiosulfate %
98.0 or higher
Water insolubles %
0.01 or less
Sulfide %
0.001 or less
Iron %
0.002 or less
The PH
6.5 to 9.5
Product scope of application ] [ photographic industry used as photographic fixing agent. Antichlor after the paper industry for pulp bleaching. Analytical chemistry with get worked up layer analysis, capacity analysis reagent. Medicine, used as a detergent, disinfectant. The food industry used as antioxidant