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Inhibition of Silane Ignition by Iodine Containing Additives



Valeri I. Babushok, Wing Tsang


The results of numerical studies on the influence of iodine and hydrogen iodide additives on silane self-ignition limits are reported. The entire matrix of possibilities with regard to silane and oxygen ratios was covered. The temperature and pressures were 300 K to 500 K and 1 atm. The change of nitrogen concentrations was used also. The analysis of the kinetic model demonstrates that the key radical intermediates are the same as those found in any hydrocarbon combustion system. The drastic effect of iodine addition has been obtained. The effect of increasing iodine is to continually squeeze the region where ignition can occur. The simulations show the very high sensitivity of the silane ignition limit to iodine additive at the ppm level. The critical conditions for chain ignition have been deduced using an abbreviated kinetic scheme. The important results from this work is that pyrophoric properties of silane and inferentially other pyrophoric hydrides can be significantly changed through the use of quite small amounts of additives and this may well lead to reductions in hazards arising from the handling of such substances.
Proceedings Title
Book of Abstracts - Annual Conference on Fire Research
Conference Dates
October 14, 1998
Conference Location
Conference Title
Fire Research Conference


ignition, inhibition, iodine, silane


Babushok, V. and Tsang, W. (2008), Inhibition of Silane Ignition by Iodine Containing Additives, Book of Abstracts - Annual Conference on Fire Research, Undefined (Accessed July 25, 2024)


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Created October 16, 2008