Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

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/LC50 for freshwater algae:
7.8 mg/L
EC10, LC10 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.