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Negotiable |
Ammonium thiosulfate H3N.1/2H2O3S2 7783-18-8
molecular formula: H3N.1/2H2O3S2
Appearance:
Colorless single crystal is inclined crystallization.
molecular formula: H3N.1/2H2O3S2
Appearance:
Colorless single crystal is inclined crystallization.
Properties:
1. Colorless single crystal is inclined crystallization.
2. Easy deliquescence. Soluble in water, slightly soluble in acetone, insoluble in alcohol, ether.
3. Aqueous long together with sulfur exhalation. Hot to 150 °C decomposition form and ammonium sulfate, sulfur, ammonia, hydrogen sulfide and water.
Use:
This product used for photographic fuser than sodium salt dissolve halogenating silver emulsions are more likely to have washed membrane, short time and silver recycling easy advantages. Also can be used as metal detergency agent, silver plating solution, reductant and chemical reagents.
Test item |
Specification |
|
AR |
CP |
|
Appearance |
Conform |
Conform |
purity/% |
≥99.0 |
≥98.5 |
Appearance of solution |
Conform |
Conform |
Water insoluble /% |
≤0.005 |
≤0.01 |
Chloride (Cl)/% |
≤0.02 |
- |
Sulphates(SO4)/% |
≤0.05 |
≤0.1 |
Sulfide(S)/% |
≤0.00025 |
≤0.0005 |
Total nitrogen (N) /% |
≤0.005 |
- |
magnesium (Mg) /% |
≤0.001 |
- |
Calcium (Ca) /% |
≤0.003 |
≤0.05 |
Ferric (Fe)/% |
≤0.0005 |
≤0.001 |
Heavy metal (Pb)/% |
≤0.0005 |
≤0.001 |
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