Smoke generators. IV. The ignition of loose powder mixtures of pyrotechnic white smoke compositions containing hexachloroethane and silumin in sealed tubes

摘要

AbstractA small sealed tube has been used to study the reaction between hexachloroethane and silumin, which is important in certain types of smoke generating pyrotechnics. Standard amounts were heated at 483 K in a 12−cm3tube. Products identified were aluminium chloride and tetrachloroethylene. The effects of added oxides were noted. Zinc oxide, magnesium oxide and cupric oxide inhibited the reaction. Ferric oxide accelerated the reaction and stannous oxide, zirconium dioxide and titanium dioxide seemed to have little effect. Other substances found to inhibit the reaction were ammonium chloride, water and ortho‐chloroaniline. Pentachloroethane was found as a product when water was present indicating the formation of pentachloroethyl radic