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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

A valid OECD 201 study according to GLP is available. After 72 h of exposure in Scendesmus subspicatus the following results based on growth rate were determined: EC10:9.73, EC50: 26.8 mg/l.

Key value for chemical safety assessment

EC50 for freshwater algae:
26.8 mg/L
EC10 or NOEC for freshwater algae:
9.73 mg/L

Additional information

In a 72-hour algal growth study, cultures of Desmodesmus subspicatus were exposed to Reaction mass of Fatty acids, tall-oil, compds. with oleylamine and Fatty acids, C18-unsatd., trimers, compds. with oleylamine at nominal concentrations (loading rate) of 0 (control), 0.1, 0.32, 1.0, 3.2, 10, 32, 100 mg/L under static conditions for in accordance with the OECD 201 guideline. The water pH, temperature and lighting intensity were all maintained within acceptable guideline specifications.The following statistical effect concentrations were obtained after 72 hours of exposure based on growth rate: EC10 : 9.73 mg/L; EC50: 26.8 mg/L