Adiabaticity
By definition an adiabatic environment is one in which enthalpy is neither lost from or given to a sample. Therefore when reactions that cause an enthalpy rise in the sample in such an environment (an exothermic event) this heat will be contained within the material and its temperature will rise.
In the chemical industry, during processing, storage or transportation, the large quantities of materials used are such that the environment in which the material is contained may be close to the adiabatic state. The larger the volume, the more adiabatic the system would usually be. There is less potential heat loss to the environment.
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Reference:
ARC Technical Information Sheet No. 22, Thermal Hazard Technology, UK
