Registration Dossier
Registration Dossier
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EC number: 215-960-8 | CAS number: 1461-25-2
Phototransformation in soil
Administrative data
Link to relevant study record(s)
- Endpoint:
- phototransformation in soil
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Study period:
- not reported
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model, but not (completely) falling into its applicability domain, and documentation / justification is limited
- Remarks:
- Value(s) derived using calculation method/software. The EPIWIN suite developed by Syracuse Research Corporation has not been validated for chemicals that contain metals in the molecular stucture; therefore, there is uncertainty associated with the calculated values and they should be used with caution.
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Method: other (calculated): AOPWIN v1.91
- GLP compliance:
- no
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- The 2nd-order rate constant for the photooxidation reaction of tetrabutyltin with photochemically-produced hydroxyl (OH) radicals was calculated to be 57 x 10E-12 cm^3/molecule*sec. Based on 1.5 x 10E+6 OH molecules/cm3 and assuming 12 hours of sunlight per 24-h day, the estimated half-life was calculated to be 4.514 hours.
- Executive summary:
USEPA. 2000 (AOPWIN Version 1.91)
The 2nd-order rate constant for the photooxidation reaction of tetrabutyltin with photochemically-produced hydroxyl (OH) radicals was calculated to be 57 x 10E-12 cm^3/molecule*sec.
Based on 1.5 x 10E+6 OH molecules/cm^3 and assuming 12 hours of sunlight per 24-h day, the estimated half-life was calculated to be 4.514 hours. The EPIWIN suite developed by Syracuse Research Corporation has not been validated for chemicals that contain metals in the molecular stucture; therefore, there is uncertainty associated with the calculated values and they should be used with caution.
Reference
USEPA. 2000 (AOPWIN Version 1.91)
The 2nd-order rate constant for the photooxidation reaction of tetrabutyltin with photochemically-produced hydroxyl (OH) radicals was calculated to be 57 x 10E-12 cm^3/molecule*sec. Based on 1.5 x 10E+6 OH molecules/cm^3 and assuming 12 hours of sunlight per 24-h day, the estimated half-life was calculated to be 4.514 hours.
Description of key information
USEPA. 2000 (AOPWIN Version 1.91)
The 2nd-order rate constant for the photooxidation reaction of tetrabutyltin with photochemically-produced hydroxyl (OH) radicals was calculated to be 57 x 10E-12 cm^3/molecule*sec.
Based on 1.5 x 10E+6 OH molecules/cm^3 and assuming 12 hours of sunlight per 24-h day, the estimated half-life was calculated to be 4.514 hours. The EPIWIN suite developed by Syracuse Research Corporation has not been validated for chemicals that contain metals in the molecular stucture; therefore, there is uncertainty associated with the calculated values and they should be used with caution.
Key value for chemical safety assessment
- Half-life in soil:
- 4.514 h
Additional information
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