The maximum temperature reached following the occurrence of the desired (synthesis) chemical reaction under adiabatic conditions starting at the designed process temperature. For a batch reactor the MTSR is equivalent to the process temperature plus the adiabatic temperature rise for the desired reaction. For a semi-batch reactor the MTSR is equivalent to the process temperature plus the adiabatic temperature rise of the synthesis reaction for those reactants that have accumulated during dosing. See also: Reaction Calorimetry (RC)