Registration Dossier
Registration Dossier
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EC number: 614-590-8 | CAS number: 68552-19-2
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
No toxic effects on microorganisms, read across.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 100 mg/L
- EC10 or NOEC for microorganisms:
- 100 mg/L
Additional information
Data on the acute toxicity of the target substance Fatty acids, C18-unsatd., dimers, polymers with 2-ethylhexanol and neopentyl glycol (CAS 68552-19-2) microorganisms are not available. The assessment was therefore based on studies conducted with the analogue substance Fatty acids, C18-unsatd., dimers, 2-ethylhexyl esters (CAS 68334-05-4) as part of a read across approach, which is in accordance with Regulation (EC) No 1907/2006, Annex XI, 1.5. Further justification is given within the analogue justification in IUCLID section 13.
The study with the source substance Fatty acids, C18-unsatd., dimers, 2-ethylhexyl esters (CAS 68334-05-4) was conducted according to OECD guideline 209. Acitvated sludge was exposed to test substance concentrations of 1.0, 3.2, 10, 32 and 100 mg/L (nominal) and the respiration of the sludge was recorded after an exposure of 3 hours. At test termination an EC50 (3 h) > 100 mg/L was determined (corresponding NOEC ≥ 100 mg/L).
Based on the results of the suitable source substances (in accordance to Regulation (EC) No 1907/2006 Annex XI, 1.5) toxic effects of Fatty acids, C18-unsatd., dimers, polymers with 2-ethylhexanol and neopentyl glycol (CAS 68552-19-2) on microorganisms are not expected.
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