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Hazard Predictions

• Generates heat: Exothermic reaction at ambient temperatures (releases heat)
• Polymerization hazard: Polymerization reaction may become intense and may cause pressurization

Acids, such as HCl promote exothermic and potentially violent polymerization of acetaldehyde, even at low temperatures (Fleischmann, G., R. Jira. 2002. Acetaldehyde. In Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA. (Online); Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 5).

Acids or acid fumes promote violent polymerization of acrolein (MCA Safety Datasheet 85, Manufacturing Chemists' Association, Washington, 1961; Urben, P.G. 1995. Bretherick's Handbook of Reactive Chemical Hazards, 5th Ed. Oxford: Butterworth-Heinemann. pp. 417; Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 63).

Acids promote polymerization of crotonaldehyde (Schulz, R.P., J. Blumenstein, and C. Kohlpaintner. 2002. Crotonaldehyde. In Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA. (Online)).