Storage of Organic Peroxides
Aral Chemicals has three storage facilities and cooling systems, which is suitable for the delicate nature of organic peroxides
Organic Peroxide Storage Requirements
In general, one of the most important factors to observe when working with organic peroxides is the required storage temperature.
The recommended max. storage temperature (Ts max.) is printed on the product labels as well as on specific Product Data Sheets (PDS) and Material Safety Data Sheets (MSDS).
During storage the peroxide must be kept below max. storage temperature(Ts max.)
If a minimum storage temperature (Ts min.) is given this means that phase separation, crystallization or solidification can occur. Therefore that peroxide must be kept between min and max. storage temperatures.
For safety reasons the maximum temperature allowed by the regulatory agencies is the control temperature (Tc). The emergency temperature (Tem) is the temperature at which emergency procedures must be implemented.
Both control (Tc) and Emergency temperatures (Tem) are specified according to SADT
|
SADT |
Control Temperature |
Emergency Temperature |
Maximumu storage Temperature |
|
20 ºC or less |
20 ºC below SADT |
10 ºC below SADT |
Control temperature |
|
20 ºC-35 ºC |
15 ºC below SADT |
10 ºC below SADT |
Control temperature |
|
Over 35 ºC |
10 ºC below SADT |
5 ºC below SADT |
Control temperature or45ºC |
When the package size is bigger the surface area/volume of peroxide is small therefore there is less heat transfer area and lower temperatures are recommended.
For a longer shelf life, storage at lower temperatures than the control temperatures is recommended.
Due to their specific properties organic peroxides cannot simply be put in any chemical stock-room for chemicals. Separate storage facilities are recommended. All peroxides must be stored in an isolated area, handled only by trained personnel.
Ventilation is important because air circulation around peroxides stored at low temperature reduces the chance of localized hot spots that can cause decomposition.
Organic peroxides inventory should be rotated to avoid shelf life problems.
The storage must be free of all combustible material.If the peroxide is volatile electrical equipments should be explosion proof. Class I Division II Group D is sufficient for D group organic peroxides.