Tepra methyl lead has been studies in a toluene carrier flow system over the term range 671-753°K. The reaction was followed by measuring the amount of, methane, ethane and Althyl benzene formed comparison of the extent of reaction based on product analysis and alkyl recovery indicate that approximately feure methyl radicals are relate for each molecule undergoing reaction K₁ = 5.0 x 10¹⁴ Exp (-49400 / RT) SB¹ with an estimated under certainly of ±1000 cal mol^-1 in E₁. Under the conditions used E₁ should be a reasonable measure of D[(CH₃)₃ Pb-CH₃)].