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EC number: 931-335-9
CAS number: 90622-74-5
study was conducted to determine the effects on terrestrial (non-target)
plants of the read across substance C8-18 and C18-unsatd. DEA, according
to OECD Guideline 208, in compliance with GLP. Seeds of six plant
species were sown in natural soil treated with the test substance in two
main tests. The experiments were repeated in main test 2 with four
species due to invalid emergence (bean) and effects at the limit test
concentration (barley, buckwheat, onion) in main test 1. The test
substance concentration was 1000 mg/kg dry soil (Limit tests in main
test 1) and 10, 32, 100, 320 and 1000 mg/kg dry soil (Definitive tests
in main test 1 and 2). Application solutions for the different test
concentrations were prepared by dispersing the test substance in
ultrapure water and then thoroughly mixed with the soil substrate before
the seeds were sown. The study consisted of one test with five test
substance concentrations (tomato) and five tests with one limit test
concentration (barley, bean, buckwheat, oilseed rape, onion) in main
test 1 and four tests with five test substance concentrations (barley,
bean, buckwheat, onion) in main test 2. 20 replicates per treatment,
each containing one seed, were set up. A water control was performed in
parallel. Emergence of plants from seeds and mortality and symptoms of
toxicity of emerged plants were assessed during the study. Plant fresh
weight and shoot length were determined at test end, 21 days after 50%
of the control plants had emerged. Under the study conditions, the test
substance reduced the emergence rate of two plant species (bean and
oilseed rape) at 1000 mg/kg dry soil and had no effects on survival of
the emerged plants up to and including the highest test substance
concentration of 1000 mg/kg dry soil for all six tested plant species.
Growth of two species (buckwheath, oil seed rape) was reduced at 1000
mg/kg dry soil. The overall NOEC was determined to be 320 mg/kg dry
soil. The lowest EC10 and EC20 were 232 and 350 mg/kg dry soil based on
effects on shoot length of oilseed rape. The lowest LC50 was > 1000
mg/kg dry soil (all species). The lowest EC50 for emergence, shoot
length and fresh weight were 633 mg/kg dry soil (oilseed rape), 768
mg/kg dry soil (oilseed rape) and > 1000 mg/kg dry soil (all species),
respectively (Schmidt, 2021).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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