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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Link to relevant study record(s)

Description of key information

ELR50>1000mg/l and NOAEC>1000mg/l (based on a loading rate of 1000mg/l) 

Key value for chemical safety assessment

EC50 for freshwater algae:
1 000 mg/L

Additional information

In an acute GLP guideline toxicity study using a C10/C12 polyalphaolefin, algae were exposed to a water accommodated fraction (WAF) at a loading rate of 1000mg/l for 48 hours under static test conditions. The measured total organic content could not be reliably distinguished from background levels. No inhibition of growth rate or biomass production or any other or adverse reactions to exposure were recorded during this period and hence the 96 hour effective loading rate (ELR50) and NOEC were both greater than or equal to 1000mg/l. This conclusion is supported by QSAR modelling.