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Product
Ammonium thiosulfate
Product name: Ammonium thiosulfate
English name: Ammonium Thiosulphate、ammohypo
CAS No: 7783-18-8
Molecular formula: (NH4)2S2O3
Molecular weight: 148.2
Structural formula:
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Technical index
|
Item |
Index |
|
appearance |
colorless clear liquid |
|
purity% |
53—60 |
|
basicity(NH4OH)% |
0.3--1.5 |
|
ignition residue % |
≤0.1 |
|
heavy metal(Pb)% |
≤0.001 |
|
sulfite % |
≤1.0 |
|
sulfide(S)% |
≤0.001 |
|
density 20°C) |
1.290--1.346 |
|
insolubles % |
≤0.2 |
|
ferrum(Fe)% |
≤0.001 |
|
PH(25℃) |
8--9 |
Uses: For printing of color film and photographic paper; as fixing agent
Packaging: liquid ammonium thiosulfate should be preserved in plastic drum; net weight: 250kg
Storage: should be preserved in cool and dry place; seperate with acidic material
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