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Registration Dossier
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EC number: 204-798-3 | CAS number: 126-71-6
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Scientifically acceptable calculation
- Principles of method if other than guideline:
- SRC AOP v1.92
- GLP compliance:
- no
- Estimation method (if used):
- PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 500000 molecule/cm³
- Degradation rate constant: 0.0000000000788 cm³/molecule-sec
- Temperature for which rate constant was calculated: 25 °C
- Calculated t 1/2 is based on a 24 h day - DT50:
- 4.88 h
Reference
Description of key information
After evaporation or exposure to the air, triisobutyl phosphate will be rapidly degraded by photochemical processes.
Key value for chemical safety assessment
Additional information
Based on a calculation according to AOPWIN v1.92, triisobutyl phosphate is indirectly photodegraded by reaction with hydroxyl radicals in the atmosphere with a half-life (t1/2) of about 4.88 h taking into account a 24-h day and a mean OH radical concentration of 0.5E06 radicals per cm³ [BASF SE, 2011].
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