Registration Dossier
Registration Dossier
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EC number: 942-086-0 | CAS number: -
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
(21 or 22 d) EC50 of ≥1000 mg/kg dw, G. max, L. esulentum, S. alba, A. sativa, L. perenne (read-across, reliability 2)
Key value for chemical safety assessment
- Short-term EC50 or LC50 for terrestrial plants:
- 1 000 mg/kg soil dw
- Long-term EC10, LC10 or NOEC for terrestrial plants:
- 1 000 mg/kg soil dw
Additional information
A seedling emergence and seeding growth test is available for GTL Gasoil (Goodband, 2011b). The test was conducted in accordance with OECD 208 and GLP, however no analytical monitoring of the test substance in the exposure medium was carried out.
Five species of plant were tested. The lowest EC50was 990 mg/kg soil dry weight with perennial ryegrass and the lowest NOEC was 560 mg/kg with mustard.
Five plant species; three dicotyledonous species, soybean (Glyicine max), tomato (Lycopersicon esulentum) and mustard (Sinapis alba) and two monocotyledonous species, oat (Avena sativa) and perennial ryegrass (Lolium perenne) were exposed to GTL Base Oil Distillates at concentrations of 100, 180, 320, 560 and 1000 mg/kg dw in a seedling emergence and growth test. The study was conducted according to OECD 208 and to GLP, however no analytical monitoring was carried out (Goodband, 2011d).
The number of seedlings which emerged, mortalities and morphological abnormalities were recorded daily for 21 or 22 days after 50% emergence in the controls for each species. It was not possible to establish an EC50with these species and NOEC values have been reported to be at least 1000 mg/kg dw for all the organisms tested and across all endpoints.
Conclusion
Terrestrial plant toxicity data are available for two GTL-derived substances in the relevant carbon number range for Hydrocarbons, C16-C22, n-alkanes, isoalkanes, <2% aromatics. In the absence of adverse effects in any of these studies, based on weight of evidence it can be concluded that the NOEC for the registered substance is ≥1000 mg/kg dw soil.
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