A mixt. of hydroxyl-terminated polybutadiene, dioctyl adipate plasticizer, dimeryl diisocyanate curing agent, NH4CIO phi, Al powder and 2,2'-bis(ethylferrocenyl)propane, lecithin additive, glycerol soln. of oxalic acid, 1,1'-isophthaloyl bis(2-methylaziridine) and (2,2'-methylene-bis(6-tert-butyl-4-methylphenol) antioxidant was prepd. as heterogeneous propellant slurry and studied for viscosity as function of time and temp. The results were presented as logarithmic equations. The propellant slurry had a relatively long pot life time.