Magnesium oxide is recommended to be used within 3 months of activation. For high-precision applications, the optimal usage period is within 7 days to ensure its activity and reaction performance are at their peak.
1. Optimal Usage Window
|
Application Scenarios |
Recommended Usage Period |
Explanation |
|
High-precision applications (e.g., electronics, pharmaceuticals, magnesium oxide boards) |
Within 7 days |
Highest activity, stable reaction, avoid micro-moisture absorption affecting product quality |
|
General industrial applications (e.g., building materials, environmental desulfurization) |
1–3 months |
Maintains good performance under sealed and moisture-proof conditions |
|
Long-term storage |
No more than 6 months |
Activity may slowly decrease to below 90%, requiring retesting |
Immediately sealing and storing after activation is a prerequisite for extending the stability period.
2.Why is it better to use it as early as possible?
Activeness Decay Risk: Even with proper sealing, trace amounts of moisture may still exist inside the packaging, leading to slow hydration over long periods.
Environmental Fluctuations: Changes in temperature and humidity can easily cause condensation or moisture absorption, especially during the rainy season or in high-temperature regions.
Process Stability Requirements: In critical applications, fluctuations in raw material activity directly affect product strength, condensation time, and other indicators.
Experimental data shows that using the product on the 7th day after activation results in a reaction rate approximately 15%–20% higher than on the 30th day.
3. Recommended Pre-Use Procedures
Pre-Opening Inspection: Confirm that the packaging is undamaged and the desiccant is not ineffective (e.g., silica gel has not changed color).
Quick Use: Weigh and dispense the material as soon as possible after opening the bag to minimize exposure time.
Small Sample Testing: For activated materials stored for more than one month, it is recommended to perform a hydration test or flowability test to verify the active state.
For automated production lines, it is recommended to establish a workflow that completes the "activation-packaging-use" process within 72 hours to maximize efficiency.
