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EC number: 202-486-1
CAS number: 96-18-4
The atmospheric dissipation half-life due to photodegradation of
1,2,3-trichloropropane was estimated with the Estimation Programs
Interface for Microsoft® Windows (EPIWIN V3.10, U.S. Environmental
Protection Agency, Office of Pollution Prevention and Toxics,
Washington, D.C.), Atmospheric Oxidation Program (v1.90) modeling
component. Modelling was executed on March 5, 2002. The AOP component of
EPIWIN was used to calculate the rate of photodegradation for
1,2,3-trichloropropane. The half-life was calculated to be 30.5 days.
There is no absorption of solar radiation by 1,2,3-TCPa in the
troposphere. Only indirect photolysis (reaction with OH) occurs. The
overall rate constant (KOH) was determined to be 0.3511 x 10-12
cm3/molecule-sec. The half-life of 30.5 days is based on a mean hydroxyl
radical concentration of 1.5E6 per cm3 over a 12-hour day.
The modelled half-life for phototransformation in air of 1,2,3-trichloropropane is 30.5 days based on a mean hydroxyl radical concentration of 1.5E6 per cm3 over a 12-hour day.
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