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Short-term toxicity to fish

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Description of key information

LC50 (96 h) for Danio rerio = 7.1 mg a.i./L (nominal, OECD 203)

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.

No acute fish study on toxic effects of AES (C12 -14, 1-2.5EO) Mg is available. Therefore, a read-across approach from two structural comparable AES (C12 -14, 2.5EO) mixtures was applied.

The first study was performed according to OECD guideline 203 in compliance with GLP requirements. Under flow-through conditions zebra fish (Danio rerio) were exposed to AES (C12-14, 1-2.5EO) Na (CAS 68891-38-3). After 96 h a LC50 of 7.1 mg a.i./L (nominal) was determined (Sasol, 1995).

In the second GLP-study zebra fish (Danio rerio) were exposed to AES (C12-14, 1-2.5EO) MIPA (CAS 1187742 -72 -8) according to OECD guideline 203 (Sasol, 1999). The resulting LC50 (96 h) was 7.7 mg a.i./L (nominal).