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Hazard Predictions

• Flammable: Reaction products may be flammable
• Generates heat: Exothermic reaction at ambient temperatures (releases heat)
• Intense or explosive reaction: Reaction may be particularly intense, violent, or explosive

Cesium acetylide reacts vigorously on heating with boron or silicon (J. W. Mellor, 1946. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 5, pp. 848. Longmans, Green and Co Ltd.).

The reaction of sulfur and tetraphenyllead may be explosive (Methoden der Organischen Chemie; Muller, E. (Ed.); Stuttgart, Thieme, 1975, Vol. 13.3, p. 236).

Mixtures of charcoal and NaBH4 can spontaneously ignite in air (Collin, P.A., C. Sidgwick. 1992. Chemistry in Britain 28(4):324).

NaH reacts violently with sulfur (J. W. Mellor, 1941. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 2, pp. 483. Longmans, Green and Co Ltd.).

Grinding sodium acetylide with finely divided aluminum, iron, lead, or mercury may result in a vigorous reaction that releases carbon (J. W. Mellor, 1946. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 5, pp. 848. Longmans, Green and Co Ltd.).

Diborane forms flammable borohydrides on contact with aluminum (Hazardous Chemical Data. 1975. NFPA 49, Boston, National Fire Protection Association, pp. 114).

A mixture of barium acetylide and selenium incandesces when heated to 150C (J. W. Mellor, 1946. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 5, pp. 862. Longmans, Green and Co Ltd.).

The reaction of diethylzinc and arsenic trichloride or phosphorus trichloride is violent, forming pyrophoric triethylarsine or triethylphosphine (Leleu, J., Cahiers de Notes Documentaires, 1977, (88), 372).