Michem Emulsion 98040M1 Fischer-Tropsch wax Michelman Wax F-T waxes are produced almost exclusively in South Africa, by coal gasification. They are nonionic. These waxes have molecular weights of 300–1400 gms/mole, and melt points of about 99°C, and provide block, rub and scuff resistance. Fischer-Tropsch wax. Provides block, rub and scuff resistance.