Epoxy Storage Temperature

Epoxy Storage and Shelf Life



Epoxy Storage Temperature. The colder the product, the more the exothermic reaction will be reduced and the polymerization time will slow down. In addition, the viscosity of parts A and B will increase and decrease the efficiency of the boiling. The higher the starting temperatures of parts A and B, the more the reactivity of the system will be accentuated, leading to yellowing, shrinkage and the possibility of cracks. 

When using and/or handling epoxy resins or any thermoset resins, a Material Safety Data Sheet (MSDS) should be provided by the manufacturer. The MSDS/TDS contains instructions, precautions, recommendations, and possible hazard potentials with the use of that material. Anyone who is expected to use, handle, or have exposure to the material should review and understand the instructions and recommendations.

Epoxy Storage Temperature

Two component epoxy resin systems should be stored between 72°F – 74°F in a dry, low humidity environment. Avoid colder temperature, it will enhance the storage stability of two component epoxy resin systems. Most two-component epoxy resin systems are naturally susceptible to crystallization, fogginess and contamination.

Also, always store at temperatures recommended on the TDS/MSDS. Epoxy kits ( open or closed) should be stored in clean dry areas with low humidity. Avoid storing epoxy resin near heat sources. All lids should be securely fastened to prevent any air to get inside the containers and activate the yellowing of some raw materials.

Epoxy can last many years when the resin and hardener are properly stored. Make sure they are placed at room temperature and lids closed to prevent contamination & oxidation. While most epoxy resins will have a shelf life of 6-12 months, the epoxy will actually always be good. After exceeding the shelf life, the main difference will be the colour change of part B – hardener. This colour change caused by time and the natural oxidation process of the amines in the hardener, is the only real change in properties. It is important to understand that once the shelf life has been exceeded, this does not change anything in terms of mechanical properties, adhesion, strength or hardness.


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