Registration Dossier
Registration Dossier
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EC number: 200-751-6 | CAS number: 71-36-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
With high probability acute not harmful to algae.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 225 mg/L
- EC10 or NOEC for freshwater algae:
- 129 mg/L
Additional information
Several studies are available on the acute toxicity of butan-1 -ol to algae with EC50 values far above 100 mg/L. Only one out of these has been performed according to OECD guideline 201, under GLP-conditions and with analytical dose verification (Equilon Enterprises 1998). The EC50 (96h) was 225 mg/L for Selenastrum capricornutum (measured concentration), the NOEC was 129 mg/L. This result is supported by observations of BASF AG (1989).
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