Dielectric relaxation measurements of Allyl Chloride (AC) with Dimethyl Formamide (DMF) mixture for different concentrations over the frequency range10MHZ to 20GHZ at 288K, 298K, 308 k & 318K have been carried out using Picoseconds Time Domain Reflectometry (TDR). Static permittivity (ε0), dielectric constant at high frequency (ε∞) and relaxation time (τ) were found through dielectric measurements. The Bruggeman factor (fB), Kirkwood correlation factor (geff), excess static permittivity (ε0E), and excess Inverse relaxation time (1/τ) E were determined and discussed to yield information on the molecular interaction and the Dynamics of the mixture of the system.