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Ecotoxicological information

Toxicity to aquatic plants other than algae

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Link to relevant study record(s)

Description of key information

Two reliable supporting study on exposure of the monocotLemna minor(Araceae) to nonylphenol were reported by Brooke (1993) and Spehar et al (2010) with 96 hr test results based on frond production. The NOEC and LOEC forL. minorfrond production were similar in both studies with 0.901 mg nonylphenol/L and 2.08 mg nonylphenol/L, respectively.

Key value for chemical safety assessment

EC10 or NOEC for freshwater plants:
0.901 mg/L

Additional information

Two reliable supporting studies were available (as above). Determination of the NOEC and LOEC was dependent upon the exposure treatment dilution series in the test. No exposure treatment was intermediate of the NOEC and LOEC concentration treatments and further precision for these endpoint concentrations was not determined.