A robust finite-time control design for temperature tracking in batch reactors is presented. The proposed controller is composed by (a) a nominal inverse-dynamics feedback function that induces convergence in finite time and (b) a calorimetric balance estimator to compensate for uncertainties due to unmeasured concentrations, reaction kinetics, and heat-transfer parameters, It is shown that the proposed robust feedback controller can be seen as a type of nonlinear proportional-integral controller with an antireset windup scheme. Numerical simulations are provided to illustrate the flexibility and the performance of the controller.