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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

ErC50 (72 h) > 100 mg a.i./L (nominal) and NOEC (72 h) = 31.3 mg a.i./L (nominal) for Pseudokirchneriella subcapitata.

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 effects AES (C9 -11, 1 -2.5EO) NH4 (CAS 160901 -27 -9) are available. Therefore, a read-across approach from the structural comparable AES (C8 -10, 1 -2.5EO) NH4 (CAS 68891 -29 -2) mixture was applied.

For AES (C8 -10, 1 -2.5EO) NH4 a GLP-study was performed according to OECD guideline 201. Based on growth rate an EC50 (72 h) > 100 mg a.i./L (nominal) for Pseudokirchneriella subcapitata was determined. The corresponding NOEC (72 h) was 31.3 mg a.i./L (nominal) (BASF, 2013).