Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Water accomodated fractions of hydrocarbons, C10, aromatics, >1% naphthalene, produced a freshwater 72-hr EL50 value for Pseudokirchneriella subcapitata (formerly Selenastrum capricornutum) of 1.0 to 3.0 mg/l based on both growth rate and biomass. The 72-hr NOELR (No Observed Effect Loading Rate) value for Pseudokirchneriella subcapitata is approximately 1.0 mg/l based on both growth rate and biomass. 
In a supporting study, water accomodated fractions of hydrocarbons, C10, aromatics, >1% naphthalene, produced a freshwater 72-hr EL50 value for Pseudokirchneriella subcapitata (formerly Selenastrum capricornutum) of 11 mg/l and 8.5 mg/l based on growth rate and biomass, respectively. The 72-hr NOELR (No Observed Effect Loading Rate) value for Pseudokirchneriella subcapitata is 2.5 mg/l based on both growth rate and biomass.

Key value for chemical safety assessment

Additional information

Water accomodated fractions of hydrocarbons, C10, aromatics, >1% naphthalene, produced a freshwater 72-hr EL50 value for Pseudokirchneriella subcapitata (formerly Selenastrum capricornutum) of 1.0 to 3.0 mg/l based on both growth rate and biomass. The 72-hr NOELR (No Observed Effect Loading Rate) value for Pseudokirchneriella subcapitata is approximately 1.0 mg/l based on both growth rate and biomass.