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Hazard Predictions

• Flammable: Reaction products may be flammable
• Generates gas: Reaction liberates gaseous products and may cause pressurization
• Generates heat: Exothermic reaction at ambient temperatures (releases heat)
• Intense or explosive reaction: Reaction may be particularly intense, violent, or explosive
• Toxic: Reaction products may be toxic

The combination of chlorosilanes and inorganic sulfides may result in vigorous reactions which are similar to the reactions of other strong halogenating agents with inorganic sulfides. See the following:

Many inorganic sulfides ignite on contact with fluorine (Mellor, J.W. 1940. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 2, p. 11,13. Longmans, Green and Co Ltd.; Volume 6. pp. 110; 1938. Volume 9. pp. 522; 1947. Volume 10. pp. 133; 1943. Volume 11. pp. 430; Moissan, H., Le Fluor et ses Composes, Paris, Steinheil, 1900, pp. 231-232.) or chlorine (Mellor. 1940. Volume 4. pp. 952; 1946. Volume 6. pp. 144; 1939. Volume 9. pp. 270.).

PbS reacts violently with ICl (Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 2105).

Na2S reacts exothermically with tungsten hexachloride and other metal chlorides (Kaner, R.B. 1991. Nature 349, 510.).

H2S may react explosively with BrF5 (Mellor, J.W. 1956. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 2, Supp. 1, p. 172. Longmans, Green and Co Ltd.), ClF3 (Mellor. 1956. Volume 2, Supplemental 1. pp. 157.), Cl2O (Mellor. 1941. Volume 2. pp. 241-242; 1946. Volume 5. pp. 824.), or F2O (Streng, A.G. 1963. Chemical Reviews 63:612.).

Caution should be used before proceeding. Further research of comparable examples in the literature or very small scale, carefully controlled experiments may be needed to fully assess compatibility. The generation of gases may be rather slow, however confinement may lead to dangerous conditions.

Potential Gas Byproducts

• Hydrogen Sulfide (H2S)