Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

EC50/LC50 for freshwater algae:
500 mg/L
EC50/LC50 for marine water algae:
50 mg/L
EC10, LC10 or NOEC for freshwater algae:
62.5 mg/L
EC10, LC10 or NOEC for marine water algae:
6.3 mg/L

Additional information

The available data for saltwater aquatic algae and cyanobacteria are limited and to obtaine the value for PNECs for saltwaters is taken account a assesment factor 10 to extrapolate to LC50 following the “Guidance on Information Requirement and Chemical Safety Assessment R.10: Characterisation of dose [concentration]- response for environment”and “Table R.10-5 Assessment factors proposed for deriving PNEC water for saltwater for different data sets”, to account for the possibility that greater taxonomic diversity in the marine environment makes it likely that some marine taxa may be more sensitive than the most sensitive freshwater taxa.