Registration Dossier
Registration Dossier
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EC number: 224-030-0 | CAS number: 4170-30-3
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Pseudomonas putida: EC10 (18 hrs, measured values): 10.4 mg/l
Domestic sewage, aerobic: Toxicity threshold (3 days, nominal values): 14 mg/l
Domestic sewage, anaerobic: EC0 (24 hrs, nominal values): 50 mg/l, EC0 50 mg/l and 150 mg/l
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 10.4 mg/L
Additional information
Two aerobic as well as two anaerobic studies are available assessing the toxic effects of crotonaldehyde to microorganisms. In an aerobic single species study conducted with Pseudomonas putida, the 18 h EC10 was 10.4 mg/l based on measured values. The second aerobic study with conducted domestic sewage reported a toxicity threshold of 14 mg/l based on nominal values after an exposure period of 3 days. In the two anaerobic fermentation tests anaerobic bacteria from a domestic sewage treatment plant were used. The first study reported an EC0 of 50 mg/l and an EC50 of 90 mg/l after an exposure period of 24 hours and based on nominal values. The second study reported an EC0 of 150 mg/l, also after an exposure period of 24 hours and based on nominal values.
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