Registration Dossier
Registration Dossier
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EC number: 203-860-7 | CAS number: 111-34-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
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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