Registration Dossier
Registration Dossier
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EC number: 939-575-6 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
ErC50 (72 h) = 14 mg a.i./L (nominal) and NOEC (72 h) = 0.95 mg a.i./L (measured) for Scenedesmus subspicatus (OECD 201)
Key value for chemical safety assessment
Additional information
The assessment is based on the data currently available. New studies, based on the category review and the final decisions issued for some of the category substances, which are also relevant for this assessment, are currently being conducted. The hazard assessment with respect to aquatic toxicity will be updated once all ongoing studies have been finalised.
For aquatic algae no studies on toxic effects of AES (C12-14, 1-2.5EO) NH4 are available.Therefore, a read-across approach from two comparable AES (C12 -14, 2.5EO) mixtures was applied.
For AES (C12-14, 1-2.5EO) MIPA (CAS 1187742 -72 -8) a GLP-study was performed according to OECD guideline 201. Based on growth rate an EC50 (72 h) of 14 mg a.i./L (nominal) for Scenedesmus subspicatus was observed (nominal). The corresponding NOEC (72 h) was 2 mg a.i./L (nominal) (Sasol, 1999).
For AES (C12-14, 1-2.5EO) Na (CAS 68891-38-3) a GLP-study was performed according to OECD guideline 201. Based on growth rate an EC50 (72 h) of 27.7 mg a.i./L (measured) for Scenedesmus subspicatus was determined. The corresponding NOEC (72 h) was 0.95 mg a.i./L (measured) (Sasol, 1993).
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