Registration Dossier
Registration Dossier
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EC number: 812-656-2 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
EC10/50 (3 h) > 100000 mg/L (nominal, OECD 209)
Key value for chemical safety assessment
Additional information
One study, investigating the toxicity to microorganisms of fatty acids, C16-18 even numbered and C18-unsatd. Triesters with propylidynetrimethanol (CAS 57675-44-2), is used as read across for fatty acids, C16-18 (even numbered) and C16-18unsatd. (even numbered), mono-, diesters with neopentyl glycol and di-, triesters with trimethylolpropane (CAS 85186-92-1). This read-across substance is structurally and compositionally related to fatty acids, C16-18 (even numbered) and C16-18unsatd. (even numbered), mono-, diesters with neopentyl glycol and di-, triesters with trimethylolpropane (CAS 85186-92-1). The respiration inhibition test with activated sludge (domestic) according to OECD 209 showed an increase of respiration rate about 20% at the tested concentration of 10000 mg/L (nominal) compared to the control (Kuttler, 1997). No inhibition of respiration rate was observed. Therefore, the EC10 and EC50 (3 h) were derived as > 10000 mg/L (nominal). Based on the result of the read across substance, it can be concluded that no toxicological effects on microorganisms are expected forfatty acids, C16, C18 and C18-unsatd., mixed esters with neopentyl glycol and trimethylolpropane (CAS 85186-92-1).Furthermore, the available test on biodegradation exhibited the ready biodegradability of the test substance. Thus, a disturbance in the biodegradation process of sewage treatment plant is not anticipated.
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