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Hazard Predictions

• Explosive: Reaction products may be explosive or sensitive to shock or friction
• 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 finely divided lithium and Viton (poly[1,1-difluoroethylene-hexafluroropropylene]) ignite in air on contact with water (Markowitz, M. M. et al., 1961, Chem. Eng. News, 39 (32), p. 4).

Poly-tetrafluoroethylene (Teflon) ignites on contact with potassium, cesium, or sodium-potassium alloy, even in the absence of oxygen (National Fire Protection Association. 1975. Publication 491M. pp. 394; Burkhardt, E. R. 2006. Potassium and Potassium Alloys. Ullmann's Encyclopedia of Industrial Chemistry. (Online)).

Mixtures of lithium shavings and halocarbons such as fluorotrichloromethane and 1,1,2-trichlorotrifluoroethane are impact-sensitive and can explode (Bretherick, L. Bretherick's Handbook of Reactive Chemical Hazards, 4th Edition. Oxford: Butterworth-Heinemann. pp. 1648).

Sodium-potassium alloy explodes violently upon contact with 1,1,2-trichlorotrifluoroethane, and may react with other chlorofluorocarbons (Bretherick, L. Bretherick's Handbook of Reactive Chemical Hazards, 4th Edition. Oxford: Butterworth-Heinemann. pp. 1626; Manual of Hazardous Chemical Reactions, NFPA 491M, 1975. Quincy, MA, National Fire Protection association, 5th Edition. p. 394).

The reaction of sodium and 2,2,3,3-tetrafluoropropanol resulted in a violent fire, with release of HF gas and exothermic polymerization (Bretherick, L. Bretherick's Handbook of Reactive Chemical Hazards, 4th Edition. Oxford: Butterworth-Heinemann. pp. 413).

Potential Gas Byproducts

• Hydrogen Fluoride (HF)
• Acid Fumes