Registration Dossier
Registration Dossier
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EC number: 203-630-6 | CAS number: 108-93-0
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Principles of method if other than guideline:
- calculated using EPI Suite Version 4.11
- GLP compliance:
- no
- Estimation method (if used):
- PHOTOCHEMICAL REACTION WITH OH RADICALS- Concentration of OH radicals: 500000- Degradation rate constant: 0.00000000001747 cm³/molecule-sec- Temperature for which rate constant was calculated: 25 °C- Computer programme: SRC AOP v1.92 - Calculated t 1/2 is based on a 24 h day
- DT50:
- 22.03 h
- Conclusions:
- The calculated half-life for phototransformation of cyclohexanol in air is 22.03 hours.
- Executive summary:
The phototransformation of cyclohexanol in air was predicted with the software tool SRC AOP v1.92. This calculation resulted in a half-life of 22.03 hours.
Reference
Description of key information
DT50 = 22.03 hours (EPISUITE calculation, 2017)
Key value for chemical safety assessment
- Half-life in air:
- 22.03 h
Additional information
A calculation using AOP v1.92 was performed for the estimation of the indirect photodegradation in the atmosphere. For this calculation a 24-hour day as well as a sensitizer-concentration (OH-radicals) of 500,000 molecules/cm³ were assumed. The calculated rate constant is 0.00000000001747 cm³/molecule/sec corresponding to an estimated half-life in the troposphere of 22.03 hours. After evaporation or exposure to the air, the product will be rapidly degraded by photochemical processes.
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