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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

Potassium reacts with acetylene even at cold temperatures to form reactive potassium carbide (K2C2) and possibly hydrogen gas. When this reaction is warmed, it results in a fire (Pascal, P. 1966. Nouveau Trait茅 de Chimie Min茅rale. Vol. 2, Part 2, p. 31. Masson et Cie.).

Heated lithium reacts incandescently with acetylene, forming explosive lithium carbide (Li2C2) and pyrophoric lithium hydride (Pascal, P. 1966. Nouveau Trait茅 de Chimie Min茅rale. Vol. 2, Part 1, p. 38, 137. Masson et Cie.).

Liquid potassium ignites and explodes in acetylene (Berthelot, M. 1866. Bull. Soc. Chim. (France) [2] 5:188).

Liquid sodium reacts with acetylene to form reactive sodium carbide (Na2C2) and sodium acetylide (NaC2H) and flammable hydrogen gas (Pascal, P. 1966. Nouveau Trait茅 de Chimie Min茅rale. Vol. 2, Part 1, p. 224, 867. Masson et Cie.).

Potential Gas Byproducts

• Hydrogen (H2)