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EC number: 946-768-9
CAS number: -
ECr50 > 100 mg/l based on frond number
ECr50 > 100 mg/l based on dry weight
No information on "toxicity to
aquatic plants other than algae" is available for the Target Substance.
However data on Similar Substance 02 has been taken into account for the
assessment. More details about the similarity between the two substances
are reported in section 13.
The growth inhibitory effects of the
test substance to the duckweed Lemna minor were investigated
according to test guideline OECD 221, under static conditions over a
period of 7 days.
The test solutions were prepared by
dissolving the test item in Swedish Standard medium. The test was
performed as a limit test at 100 mg/l nominal concentration.
Six parallel test vessels were used
for the test concentration and six vessels for the blank controls.
The test concentrations during the
7-day test period weredetermined by photometry at the beginning of the
test, as well as after 3, 5 and 7 days of exposure. These analyses
confirmed the right dosage of the test item, and showed that the
concentrations of the test item could be satisfactorily maintained over
the 7-days test period. Therefore, the effective concentrations (ErC50and
EyC50) were assessed based on the nominal
concentration. The two endpoints frond number and biomass (dry weight)
were investigated at days 3, 5 and 7, and each of them were assessed as
growth rate and yield.
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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