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Hazard Predictions

• Corrosive: Reaction products may be corrosive
• 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

Ethanol reacts with active metals to form the ethoxide ion and H2 gas (Logsdon, J.E. 2004. Ethanol. In Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. (Online)).

Isopropanol reacts with finely-divided aluminum to form H2 gas. The reaction is exothermic, and can be vigorous after an induction period (Logsdon, J.E., R.A. Loke. 1996. Isopropyl Alcohol. In Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. (Online); Wilds, A.L. 1944. Organic Reactions 2:198).

After an induction period, MeOH/CCl4 can dissolve active metals such as Al, Mg, and Zn, and the dissolution process is rapid and exothermic. Flammable H2 or CH4 gases may be produced. Methanol forms highly explosive mixtures with aluminum or magnesium (Shidlovskii, A.A. 1947. Chemical Abstracts 41:1105d), and the mixing process can be violent (Urben, P.G. 1995. Bretherick's Handbook of Reactive Chemical Hazards, 5th Edition. Oxford: Butterworth-Heinemann. pp. 1658; Kuppers, J.R. 1978. Journal of the Electrochemical Society 125:97-98).

Methanol releases toxic and flammable CO gas when distilled over powdered zinc (Rodd, E. H, ed. Chemistry of Carbon Compounds, Elsevier Publishing Company, Amsterdam, 1951, vol. 1a, pp. 298).

Potential Gas Byproducts

• Carbon Monoxide (CO)
• Hydrogen (H2)
• Hydrocarbons