Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 219-641-4 | CAS number: 2489-05-6
Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
Key long-term data for three aquatic plant species are available; all from the freshwater compartment. These were an EC10 of 14.8 µg/L Ag for Salvinia natans (Hutchinson and Czyrska 1975), an EC10 of 6.0 µg/L Ag for Lemna minor (Naumann et al. 2007), and an EC10 of 10.33 µg/L Ag for Lemna paucicostata (geometric mean from two EC10 values reported in Nasu and Kugimoto (1981)).
Key value for chemical safety assessment
Additional information
Key long-term data for three species of macrophyte are available. The first is a seven-day EC10 of 6.0 μg/L total silver (nominal concentration) for Lemna minor growth rate inhibition generated from a static test conducted according to ISO 20079 (Naumann et al. 2007). The second macrophyte species with data available was Lemna paucicostata with data from a further seven-day growth inhibition test, although this was not conducted according to a standard method (Nasu and Kugimoto, 1981). As this test was conducted under two pH regimes (6.1 and 7.1) the geometric mean of the two EC10 values (6.4 and 16.67μg/L total silver (nominal) was used in the SSD (10.33 μg/L). The third macrophyte species with data available is Salvinia natans, a floating fern, (Hutchinson and Czyrska, 1975). A 21-day EC10 of 14.8 µg/L total silver (nominal) was calculated from growth data presented in the paper, again generated using a non-standard, but sufficiently well described method.
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.
