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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

ErC50 (72h) = 16 mg/L, NOEC (72h) = 2.1 mg/L for Pseudokirchneriella subcapitata (OECD 201, full test)

Key value for chemical safety assessment

EC50 for freshwater algae:
16 mg/L
EC10 or NOEC for freshwater algae:
2.1 mg/L

Additional information

The toxicity to algae was investigated in a GLP under static conditions according to OECD 201 with Pseudokirchneriella subcapitata (Kimmel, 2012). Algae were exposed to nominal concentrations of 2.1, 4.6, 10, 21 and 46 mg/L. The test item was stable in the test media over the test period. The study resulted in an ErC50 of 16 mg/L and a NOEC of 2.1 mg/L. Additional data on the toxicity to algae are presented in the dossier “Environmental and Health Assessment of Substances in Household Detergents and Cosmetic Detergent Products” by the Danish Ministry of Environment and Energy (Madsen et al., 2001). Herein, results from a study according to ISO 8692 are cited. Algae were exposed to concentrations of 1, 2, 5, 10, 20 and 50 mg/L. The EC50 was determined to be 15 mg/L. The NOEC was determined to be 5 mg/L.