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Registration Dossier
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EC number: 201-245-8 | CAS number: 80-05-7
Phototransformation in air
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in air
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
- Principles of method if other than guideline:
- other: calculated with EPISuite v3.12, AOPWIN v1.91, model (US EPA, 2000)
- GLP compliance:
- not specified
- Estimation method (if used):
- Photochemical reaction with hydroxy radicals:
Sensitiser (for indirect photolysis): hydroxy radicals (OH)
Concentration of OH radicals: 1.5E06 molecules / cm3
Temperature for which rate constant was calculated: 25 °C
Daylight: 12 hours per day - Details on light source:
- Sunlight
- DT50:
- 0.13 d
- Test condition:
- calculated
- Transformation products:
- not specified
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- The rate constant for indirect photolysis in air (OH-mediated photodegradation) for Bisphenol A is 80.6E-12 cm3 / (molecule*sec) and half-life is 0.13 days, assuming 12 hours daylight and a hydroxyl radical concentration of 1.5E6 molecules per cm3.
- Executive summary:
After exposure to air, Bisphenol A will be rapidly degraded by photochemical processes. The rate constant for indirect photolysis in air (OH-mediated photodegradation) is 80.6E-12 cm3 / (molecule*sec) and half-life is 0.13 days, assuming 12 hours daylight and a hydroxyl radical concentration of 1.5E6 molecules per cm3.
Reference
Description of key information
After exposure to air, Bisphenol A will be rapidly degraded by photochemical processes. The rate constant for indirect photolysis in air (OH-mediated photodegradation) is 80.6E-12 cm3 / (molecule*sec) and half-life is 0.13 days, assuming 12 hours daylight and a hydroxyl radical concentration of 1.5E6 molecules per cm3.
Key value for chemical safety assessment
- Half-life in air:
- 0.13 d
- Degradation rate constant with OH radicals:
- 0 cm³ molecule-1 s-1
Additional information
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