Terpolymeric ligand (m-CMF-II) was synthesized by acid catalysed polycondensation of m-cresol (0.1 M), melamine (0.05 M) and formaldehyde (0.2 M) at 120-1250C. Tentative structure of ligand was determined by physicochemical methods such as elemental analysis, IR and NMR. Activation energy of electrical conduction was determined by voltage divider method. Ligand was found to obey Wilson’s law. Thermokinetic parameters of thermal degradation were determined by Freeman-Carroll (FC) and Sharp-Wentworth (SW) method. Thermokinetic parameters such as activation energy (Ea), apparent entropy (ΔS), free energy (ΔG) determine by both methods were in good agreement. Degradation was found to be first order.