Registration Dossier
Registration Dossier
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EC number: 220-666-8 | CAS number: 2855-13-2
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- (Q)SAR
- Adequacy of study:
- other information
- Study period:
- 2002
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Accepted calculation method
- Principles of method if other than guideline:
- AopWin v1.90, integrated in U.S. EPA's EPI program Vers. 3.10
- Estimation method (if used):
- Atkinson R (1987). A structure-activity relationship for the estimation of rate constants for the gas-phase reactions of OH radicals with organic compounds. Int J. Chem. Kinet. 19, 799-828
- Details on test conditions:
- Sensitiser (for indirect photolysis): OH
Sensitiser concentration: 500000 molecule/cm³ (approximate 24-hour mean in cental Europe) - DT50:
- 4.5 h
- Test condition:
- Sensitiser (for indirect photolysis): OH; Sensitiser concentration: 500000 molecule/cm³
- Transformation products:
- not specified
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- The QSAR calculated rate constant for the OH sensitized photodegradation of isophorone diamine is approximately 8.47E-11 cm3/(molecule * s) (AopWin Computer Program, Vers. 1.90, integrated in U.S. EPA's EPI program Vers. 3.10). At 500,000 OH radicals / cm3, this corresponds to a half-life of 4.5 hours.
- Executive summary:
The QSAR calculated rate constant for the OH sensitized photodegradation of isophorone diamine is approximately 8.47E-11 cm3/(molecule * s) (AopWin Computer Program, Vers. 1.90, integrated in U.S. EPA's EPI program Vers. 3.10). At 500,000 OH radicals / cm3, this corresponds to a half-life of 4.5 hours.
Reference
Rate constant (for indirect photolysis): = 0.0000000000847 cm³/(molecule*sec)
Degradation in % (for indirect photolysis): = 50 after 4.5 hour(s)
Description of key information
The QSAR calculated rate constant for the OH sensitized photodegradation of isophorone diamine is approximately 8.47E-11 cm3/(molecule * s). At 500,000 OH radicals / cm3 (approximate 24-hour mean in central Europe), this corresponds to a half-life of 4.5 hours.
Key value for chemical safety assessment
Additional information
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