A polythermal methodology to assess the mechanisms and the kinetics associated with solutions crystallisation is defined and analysed using the recently-derived KBHR model. This first principles approach yields crystallisation parameters that could otherwise only be obtained by the combined application of both isothermal and polythemal methods. The methodology is validated through assessment of experimental data measured for methyl stearate crystallising from kerosene solutions, revealing a progressive nucleation mechanism and interfacial tensions in the range of 1.64-1.79  with no obvious dependence on solution concentration in the range of 200 to 350 g/l, showing good agreement with values derived by isothermal methods. Sensitivity analysis reveals that a minimum of four different cooling rates separated by at least one order of magnitude together with at least five repeats for crystallisation temperature values at each cooling rate is appropriate.

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