Registration Dossier
Registration Dossier
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EC number: 219-376-4 | CAS number: 2426-08-6
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
96-h ErC50 = 35 mg/L (Pseudokirchneriella subcapitata)
Key value for chemical safety assessment
Additional information
The toxicity towards freshwater algae was determined in a study where exponentially growing freshwater alga (Pseudokirchneriella subcapitata) were exposed to nominal test substance concentrations of 0 (control), 10, 14, 19, 25, 35, 45, 60, 85, 120, 160, 220 and 300 mg/L under static conditions for 96 hours. The test was performed in only one replicate per test concentration. Test concentrations were not analytically verified. After 48 and 96 hours exposure duration, the algae were scored for number of cells. A concentration-dependent inhibition of growth rate was observed, from which a 96-h EC50 value was determined at 35 mg/L. From the data no chronic effect value was determined.
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