Registration Dossier
Registration Dossier
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EC number: 202-485-6 | CAS number: 96-17-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Algal growth inhibition: Pseudokirchneriella subcapitata: 72-h ErC50 = 123 mg/L; 72-h NOEC 1.43 mg/L (geom. mean measured)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 123 mg/L
- EC10 or NOEC for freshwater algae:
- 1.43 mg/L
Additional information
The growth inhibiting effect of 2 -methylbutanal on algae was tested with Pseudokirchneriella subcapitata according to OECD 20. The initial cell density of 1E04 cells/mL. The exposure duration was 96 h. The test item concentrations were analytically verified. Measured test concentrations were slightly higher than intended, but was acceptable regarding the dose response.
The reported effect values are: 72 -h NOEC = 1.43 mg/L, 72 -h ErC50 = 123 mg/L
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