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EC number: 205-016-3 | CAS number: 131-17-9
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- (Q)SAR
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- results derived from a (Q)SAR model, with limited documentation / justification
- Justification for type of information:
- QSAR prediction: migrated from IUCLID 5.6
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Predicted photooxidation half-lives for phthalate esters based on hydroxyl radical attack were obtained from structure activity relationships contained in the Atmospheric Oxidation Program (AOP), reference: Meylan, W. M., P. H. Howard. 1993. Computer Estimation of the Atmospheric Gas Phase Reaction Rate of Organic Compounds with Hydroxyl Radicals and Ozone. Chemosphere. 26:2293-2299.
- GLP compliance:
- not specified
- Estimation method (if used):
- Predicted photooxidation half-lives for phthalate esters based on hydroxyl radical attack were obtained from structure activity relationships contained in the Atmospheric Oxidation Program (AOP).
- Light source:
- sunlight
- Light spectrum: wavelength in nm:
- >= 290 - <= 400
- Duration:
- 28 d
- Parameter:
- not applicable
- Key result
- DT50:
- >= 0.04 - <= 0.4 d
- Test condition:
- Atmospheric Photooxidation Half-Life (years)
- Reaction with:
- other: Reported half-lives are specified as a range to indicate differences that are expected due to varying hydroxyl radical concentrations between pristine (3x10 "~ radicals cm 3) and polluted (3xI0 6 radicals cm -3) air.
- Transformation products:
- not measured
- Validity criteria fulfilled:
- not specified
- Conclusions:
- Diallyl Phthalate atmospheric photo-oxidation half-life was found to be between 0.04 and 0.4 days.
Reference
Description of key information
Prediction of key value based on a QSAR model included in the Atmospheric Oxidation Program (AOP), reference: Meylan, W. M., P. H. Howard. 1993. Computer Estimation of the Atmospheric Gas Phase Reaction Rate of Organic Compounds with Hydroxyl Radicals and Ozone. Chemosphere. 26:2293-2299.
Key value for chemical safety assessment
- Half-life in air:
- 0.4 d
Additional information
Diallyl Phthalate atmospheric photooxidation half-life was found to be comprised between 0.04 and 0.4 days. Reported half-lives are specified as a range to indicate differences that are expected due to varying hydroxyl radical concentrations between pristine (3x10 2 radicals cm 3) and polluted (3x10 6 radicals cm -3) air.
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