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A researcher was performing a deprotonation experiment inside a hood in his lab. A flask containing two liters of acetone in a dry ice bath at -78 degrees celsius was secured by a clamp to the hood support assembly. An injection of diphenylphosphinous chloride was started when the clamp securing the flask released allowing an unknown quantity of acetone to splash onto the base of the hood. Cleanup was in progress when the acetone fumes found a source of ignition and flashed. A small fire was contained to the hood. Slight damage occurred to electrical equipment inside the hood. The flash over occurred approximately three minutes after the spill. The fire was extinguished using a portable fire extinguisher. No one was injured.
Contact your Chemical Hygiene Officer or the Department of Environmental Health & Safety (831-8475) if you have questions or concerns about the safety of your procedures.