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RE: Ozone precursors
Almost all organic solvents are consider photochemically reactive at ground
level. The specific compounds not reactive are listed in the VOC
Web address =
VOC's are defined by what is excluded.
Common solvents that are VOCs and DO contribute to smog are
trichloroethylene, MEK, Xylene, Toluene etc.
Common solvents that do NOT contribute to smog are methylene chloride,
perchloroethylene and acetone
From: Dave Foulkes [SMTP:Dave.Foulkes@epa.state.oh.us]
Sent: Friday, June 09, 2000 8:11 AM
Subject: Ozone precursors
At ground level, ozone (O3) is formed by a series of reactions, including
sunlight, involving VOCs combining with NOx. VOC and NOx are called ozone
Does anyone know what solvent cleaners/degreasers are considered ozone
precursors and photochemically reactive for forming ground level ozone?
David A. Foulkes, Environmental Specialist
State of Ohio EPA
Office of Pollution Prevention
P.O. Box 1049
Columbus, OH 43216-1049
World Wide Web: http://www.epa.state.oh.us/opp