Acrolein
Acrolein was chosen to point out that some chemicals are very dangerous when spilled, even in small quantities. The "footprint" of a spill of acrolein is greater than six miles when 50,000 pounds are involved, so there was no modeling for a "footprint of a spill of 500,000 pounds in the illustration. Acrolein has a molecular weight of 56.06 kg/kmol. The IDLH of acrolein is 2ppm, and its boiling point is 126.84 degrees Fahrenheit. The vapor pressure is 0.48 atm. The plume from a 500 pound spill (about one barrel) of acrolein would travel over two miles before dissipating below the IDLH. Acrolein is an EPCRA EHS chemical, with an RQ of 1 pound, and a TPQ of 500 pounds. Acrolein is also a CERCLA Hazardous Substance, with an RQ of 1 pound, meaning that if 1 pound of Acrolein is spilled (released) at a facility, the facility must notify the National Response Center, the LEPC, the SERC, and the local fire department.
Acrolein Phoenix, AZ Urban/Rural Day 90°F and Night 68°F at 5k and 20k
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500 lbs |
5,000 lbs |
50,000 lbs |
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5k/Urban/day 90 F |
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5k/Rural/day 90 F |
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20k/Urban/day 90 F |
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20k/Rural/day 90 F |
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5k/Urban/night 68 F |
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5k/Rural/night 68 F |
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20k/Urban/night 68 F |
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20k/Rural/night 68 F |