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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The freshwater acute endpoint represents the lowest toxicity value obtained for Desmodesmus subspicatus (Kuhn and Pattard., 1990).
The freshwater long-term endpoint represents the lowest toxicity value obtained for Microcystis aeroginosa (Brigham, 1975, 1976).

Key value for chemical safety assessment

EC50 for freshwater algae:
7.8 mg/L
EC10 or NOEC for freshwater algae:
6.8 mg/L

Additional information

Endpoints derived for p-Cresol (for the acute endpoint) and o-Cresol (for the chronic endpoint) have been used for this mixed xylenol assessment. Since there are structural and physical chemical similarities between the cresols and the other molecules within the mixed xylenol grouping it is acceptable to assume that their ecotoxicological profiles would be similar.