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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic plants other than algae

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Administrative data

Link to relevant study record(s)

Description of key information

The EC10 for growth for L. minor was 2.175 mg/L as Total Al.

Key value for chemical safety assessment

Additional information

Data on Lemna minor are provided in two studies, one by Call et al. (1984) on aluminium chloride (7784 -13-6) and a second by Stubblefield (2012g).

In the study by Call et al. 96h exposure of L. minor resulted in no significant effects up to a concentration of 45.7 mg/L Total aluminium (corresponding to <LOQ of 0.3 mg/L dissolved alumium) based on frond number at pHs of 7.6 and 8.2.

In the second study where L. minor were exposed to aluminium nitrate over a period of 7 days in which total, dissolved and monomeric aluminium were measured throughout the test. A NOEC of 2.76 mg/L total Al was determined (LOEC = 5.31 mg/L) based on the most sensitive endpoint Total dry weight. The EC10 for this endpoint was 2.175 mg/L as Total Al. Dissolved aluminium values were less than the LOD (15.1 µg/L) throughout the study at all concentrations except for two cases where they were 25.8 µg/L and therefore could not be used to determine effect concentrations.