Registration Dossier
Registration Dossier
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EC number: 691-719-4 | CAS number: 1072957-71-1
Phototransformation in soil
Administrative data
Link to relevant study record(s)
Description of key information
Photolysis of SYN545192 was slow with a half-life (DegT50) of 298 days summer sunlight (30-50°N) in dry soil and 501 days in moist soil. Degradation in the dark control samples was not considered significant.
Key value for chemical safety assessment
- Half-life in soil:
- 118 d
Additional information
DegT50values for SYN545192 on irradiated and dark control soils
Test System |
[Dry Soil] |
|
[Moist Soil] |
|
|
DegT50 [days] |
χ2% |
DegT50 [days] |
χ2% |
Irradiated (experimental result) |
118 |
1.64 |
244 |
1.93 |
Dark control (experimental result) |
n/a |
n/a |
n/a |
n/a |
|
|
|
|
|
Corrected DT50 for different latitudes |
|
|
|
|
Summer Sunlight 30-50ºN (OECD) |
298 |
6.00 |
501 |
2.04 |
Tokyo Spring Sunlight |
961 |
6.00 |
>1000 |
2.04 |
Photolysis of SYN545192 was slow with a half-life (DegT50) of 298 days summer sunlight (30-50°N) in dry soil and 501 days in moist soil. Degradation in the dark control samples was not considered significant. In general, a similar degradation pattern was observed in both dry and moist irradiated soil. Photodegradation of SYN545192 produced the degradation products SYN508272, NOA449410, SYN545720 and SYN546039.
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