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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

In the key-study an EC50-value for daphnids of 7.4 mg a.s./L could be determined after 48 h of exposure. 
Nevertheless that endpoint is not used for PNEC-calculation as PNEC-values were calculated on the basis of a QSAR-model for chronic toxicity.

Key value for chemical safety assessment

Additional information

For AES (C12-18, 1-2.5EO) Na (CAS 68081-91-4) no acute test on aquatic invertebrates is available. Thus, as a worst-case assumption read-across is prepared to a study conducted on daphnids with alcohol C12 -14 ethoxysulfates. In that study Daphnia magna were exposed to different concentrations of alcohol ethoxysulfates (2EO) (purity of the test substance. 71.5% a.s. and 69.7% a-WAS) in a static system according to the guidelines OECD 202 and EG Guideline 92/69/EWG under GLP-conditions (Scholz, Sasol, 1993). In that study an EC50 (48 h)-value of 7.2 mg/L based on a-WAS (corresponding to 7.4 mg a.s./L) could be determined.