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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Acutely harmful to aquatic algae and cyanobacteria.

Key value for chemical safety assessment

EC50 for freshwater algae:
19.8 mg/L
EC10 or NOEC for freshwater algae:
5.92 mg/L

Additional information

The toxicity of n-Butyl vinyl ether (CAS 111 -34 -2) on aquatic algae was tested with a 72-hour GLP test with the green alga Pseudokirchneriella subcapitata according to OECD guideline 201. The EC50-value with 95 % confidence intervals for inhibition of specific growth rate (ErC50) after 72 hours was 19.8 (18.6 – 21.1) mg test item/L. The EC10-value with 95 % confidence intervals for inhibition of specific growth rate (ErC10) after 72 hours was 5.92 (< 5.49 – 6.71) mg test item/L. All effect values are based on geometric mean measured concentrations of the test item.

The substance is concluded to acutely harmful to aquatic algae and cyanobacteria.

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