“…viscosity (g), thermal conductivity (k), self diffusion coefficient (D) and isotopic thermal factor (Iso) at different temperatures of CH 4 which are deduced using the formulas of Monchik et al [77] and compared with the accurate experimental results of Boushehri et al [37], Prasad et al [47], Hanley et al [48], Assael et al [49], Hellemans [50], Ketsin et al [51], Hurly et al [52], Zarkova et al [53,54], May et al [55] and Uribe et al [56]. The agreement is excellent in the whole temperature range shown in Fig.…”