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The shelf life and storage conditions of colloidal silica

2021-01-22 16:09:46

The shelf life and storage conditions of colloidal silica

1

The shelf life and storage conditions of colloidal silica

1

The shelf life and storage conditions of colloidal silica

  • The shelf life and storage conditions of colloidal silica

The shelf life and storage conditions of colloidal silica

Shelf life
  1. Different types of colloidal silica have different stability. Generally, the stability and storage period of alkaline colloidal silica are better than neutral colloidal silica and acidic colloidal silica. The storage period of alkaline colloidal silica produced by our company is more than 3 years, and the storage period of acid colloidal silica is more than one year. Besides, the storage period of large size particle colloidal silica is longer than small size particle colloidal silica.
  2. When colloidal silica loses efficacy, the viscosity will gradually increase, and finally gels.

 

colloidal silica loses fluidity after gelation

 

  3. If the viscosity of colloidal silica has not increased significantly after the expiration date, it should also continue to use.
Storage conditions
  Colloidal silica in storage should pay attention to the following conditions:
  1. Storage temperature is preferably 5-40 ℃, non below 0 ℃, or will cause gel and lose efficacy.
  2. Avoid exposure to the sun. The colloidal silica in the white plastic bucket should avoid long-term exposure to the sun, in case of growing algae and producing green patches.
  3. Avoid long-term exposure of the container storing colloidal silica to prevent the precipitation of solid silica nanoparticles due to water volatilization, which will affect the product quality.


 

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