Determination of rates of reaction in the gas-phase in the troposphere. Theory and practice. 4. Rate of indirect photoreaction
The document describes a test guideline (section 796.3900) which can be used under sections 4 and 5 of the Toxic Substances Control Act (TSCA) to regulate industrial chemicals. It describes structure/reactivity (S/R) relationships of Atkinson of the University of California/Riverside for estimating the second-order rate constant k(OH) and the associated half-life t(sub 1/2)E for the reaction of an organic chemical with hydroxyl radicals in the gas-phase in the troposphere. All pertinent parameters and equations are listed in the report to enable a scientist to calculate k(OH) and t(sub 1/2)E. Sixteen organic chemicals, covering a range of molecular structures, are used to illustrate the use of the S/R relationships of Atkinson to estimate k(OH). A hypothetical example is given to illustrate the use of these S/R relationships to define testing under section 4 of TSCA. A mathematical synopsis of the S/R relationships of Atkinson is given in Section IV of the report.
- Research Organization:
- Environmental Protection Agency, Washington, DC (United States). Office of Toxic Substances
- OSTI ID:
- 5459160
- Report Number(s):
- PB-92-150382/XAB; EPA-700/R-92/003
- Resource Relation:
- Other Information: See also PB92-150374
- Country of Publication:
- United States
- Language:
- English
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Determination of rates of reaction in the gas-phase in the troposphere. Theory and practice. 3. Rate of indirect photoreaction
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Related Subjects
HYDROXYL RADICALS
PHOTOCHEMICAL REACTIONS
ORGANIC COMPOUNDS
AIR POLLUTION
ATMOSPHERIC CHEMISTRY
MATHEMATICAL MODELS
RECOMMENDATIONS
TOXIC SUBSTANCES CONTROL ACT
TROPOSPHERE
CHEMICAL REACTIONS
CHEMISTRY
EARTH ATMOSPHERE
LAWS
POLLUTION
RADICALS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)