Colorless transparent liquid or white crystal,Used as fixer for takingPhotographic s,key component of silvering electrobath,.
Ammonium Thiosulphate1. Chemical name:Ammonium Thiosulphate 2. Structural formula:3. Molecular formula:(NH4)2S2O34. Molecular weight:148.205. Properties:. Colorless transparent liquid or white crystal. Relative density of crystal: 1.679,easily soluble in water,insoluble in alcohol, ether,slightly soluble in acetone. 6. Quality standard:
| Item | Liquid | Solid |
| Appearance | colorless transparent Liquid | white crystal |
| Assay | 58-60% | ≥98% |
| Ammonium sulfite | ≤1.0% | ≤1.0% |
| Alkalinity | 0.3-1.5% | ≤0.4% |
| Fe | ≤0.00025% | ≤0.001% |
| Insoluble matter ( precipitation of Ca and Mg) | ≤0.2% | ---- |
| Heavy metals(as Pb) | ≤0.001% | ≤0.002% |
| Sulfide(as s) | ≤0.0002% | ≤0.0002% |
| Ignition residual | ≤0.1% | ≤0.2% |
| Specific gravity | 1.310-1.335 | ---- |
7. Packing: Liquid 250kg plastic drum. Solid 25KG plastic woven bag. 8.Uses: Used as fixer for takingPhotographic s,key component of silvering electrobath, shielding effect agent, casting protectant of Al-Mg alloy, bactericide and analytical reagent.
Ammonium Thiosulphate
