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Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

The test item had no significant inhibitory effect on the growth of the algae (average growth rate and yield) during the test period of 72 hours up to and including the loading rate of 100 mg/L.

Key value for chemical safety assessment

Additional information

The influence of the test item FAT 40842/A TE containing different components on the growth of the freshwater green algal species Pseudokirchneriella subcapitata (formerly Selenastrum capricornutum) was investigated in a 72-hour static test according to the OECD Guideline 201 (2006), the EU Commission Directive 92/69/EEC, C.3 (1992) and the Commission Regulation (EC) No 440/2008, C.3.

The water accommodated fractions (WAFs) with the loading rates of 1.0, 3.2, 10, 32 and 100 mg/L were tested in parallel with a control. The preparation of the test media was based on the OECD Guidance Document on Aquatic Toxicity Testing of Difficult Substances and Mixtures, 2000.

The loading rate of 100 mg/L was, therefore, determined to be the 72-hour NOEC. This value might even be higher, but loading rates of the test item above 100 mg/L were not tested, in accordance with the test guidelines. The 72-hour LOEC was higher than the loading rate of 100 mg/L.