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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

2,4,7,9-Tetramethyl-5-Decyne-4,7-Diol affected growth of the fresh water algae species Selenastrum capricornutum significantly at 2.2 mg/l and higher. The NOEC for cell growth inhibition and growth rate reduction was 1.0 mg/l. However, a recovery of growth was observed during the last 48 hours of exposure with a NOEC of 4.6 mg/l for growth rate. 

Key value for chemical safety assessment

EC50 for freshwater algae:
15 mg/L
EC10 or NOEC for freshwater algae:
1.8 mg/L

Additional information