Registration Dossier
Registration Dossier
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EC number: 224-923-5 | CAS number: 4553-62-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The substance is metabolized by algae in test medium after 72 hours. Based on nominal concentrations, the toxicity of the test substance on algae growth rate was calculated as ErC50(72h) = 1080 mg/L, ErC10(72h) = 387 mg/L, NOErC(72h) = 100 mg/L and the associated LOErC(72h) = 316 mg/L.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1 080 mg/L
- EC10 or NOEC for freshwater algae:
- 387 mg/L
Additional information
One GLP study (Hoffmann, 2010) was extensively conducted. It revealed low algal toxicity yet the substance happened to be metabolized by algae in test medium after 72 hours. Based on nominal concentrations, the toxicity of the test substance on algae growth rate was calculated as ErC50(72h) = 1080 mg/L, ErC10(72h) = 387 mg/L, NOErC(72h) = 100 mg/L and the associated LOErC(72h) = 316 mg/L.
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