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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Green algae 96h EC50 and NOEC of 16.582 and 5.077 mg/L, respectively, have been predicted by ECOSAR v1.11 (USEPA, 2012). The prediction is reliable since butylal is in the logKow and MW range of the model.

The acute prediction is supported by an OECD TG 201 and GLP test in which EC50 is > 1.3 mg/L (geometric mean concentration)

Key value for chemical safety assessment

EC50 for freshwater algae:
16.582 mg/L
EC10 or NOEC for freshwater algae:
5.077 mg/L

Additional information