Registration Dossier
Registration Dossier
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EC number: 812-652-0 | CAS number: 73947-34-9
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
EC10 (3 h) of > 1000 mg/L for activated sludge microorganisms (OECD 209).
Key value for chemical safety assessment
Additional information
One study, investigating the toxicity to activated sludge microorganisms is available for fatty acids, C8-10 (even numbered), di-and triesters with propylidynetrimethanol (CAS 11138-60-6). This respiration inhibition test (Kuttler, 1998) with domestic activated sludge according to OECD 209 showed an increase in respiration of 43% at the nominal tested concentration of 10000 mg/L compared to the control. No inhibition of respiration rate was observed. Therefore an EC50 and EC10 (3 h) of > 10000 mg/L (nominal) was derived. Furthermore, the available biodegradation tests clearly show that the substance is readily biodegradable. Thus, a disturbance in the biodegradation process of a sewage treatment plant is not anticipated.
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