Accelerated Degradation Experiment
Conditions
Procedure A1: |
10 days exposure at 50 °C and 100% relative humidity. |
Procedure A2: |
20 days exposure at 50 °C and 100% relative humidity. |
Procedure A3: |
30 days exposure at 50 °C and 100% relative humidity. |
Procedure B: |
30 days exposure at 50 °C and 100% relative humidity followed by 7 days at 70 °C and 100% relative humidity. |
Appearance of the substance
The substance, originally in the form of colourless or white crystals or white cylindrical rods, changes rapidly to a solution that contains in suspension grey insoluble particles.
Gain of moisture
After procedure A3: |
46% |
After procedure B: |
50% |
Titrimetric determination
Titration with thiocyanate in the presence of ferric ions.
| |
% decomposed |
After procedure A1 |
6 |
After procedure A2 |
21 |
After procedure A3 |
60 |
After procedure B |
80 |
Conclusion
Silver nitrate is subject to decomposition under accelerated degradation conditions.
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