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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

Mixtures of aluminum powder and metal sulfides can undergo thermite reactions, reacting explosively and at extremely high temperatures once ignited (J. W. Mellor, 1946. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 5, pp. 217. Longmans, Green and Co Ltd.; Pascal, P. 1961. Nouveau Trait茅 de Chimie Min茅rale. Vol. 6, p. 507. Masson et Cie.).

Copper and lead sulfides form explosive mixtures with magnesium (Gorbunov, V.V. et al. 1986. Combustion, Explosives, and Shockwaves 22:726).

Reaction heat between CS2 and Al or Zn may be sufficient to cause a fire (Matignon, C. 1900. Compt. rend. 130, 1391; Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 698.; J. W. Mellor, 1940. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 4, pp. 4. Longmans, Green and Co Ltd.).

H2S can cause tungsten to incandesce, posing a fire hazard (J. W. Mellor, 1947. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 10, pp. 140. Longmans, Green and Co Ltd.; J. W. Mellor, 1943. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 11, pp. 731. Longmans, Green and Co Ltd.).

Reaction between iron and H2S generates the flammable salt Fe2S3 (Moore, F.M. 1976. Proceedings from Gas. Cond. Conference 26:1).

Raney Ni catalysts may accumulate NiS if used to catalyze reactions involving elimination of sulfur; the metal-sulfide mixture may pose a fire hazard (Kornfeld, E.C. 1951. Journal of Organic Chemistry 16:137).

Reaction between ammonium sulfide and zinc evolves toxic and flammable H2S gas and flammable H2 gas (Anon. 1960. Sichere Chemiearb. 12(4):29).

Potential Gas Byproducts

• Hydrogen (H2)
• Hydrogen Sulfide (H2S)