Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
Reliable predicted value obtained by the OECD QSAR Toolbox using trend analysis within category members.The prediction fulfilling the OECD criteria for the validation of QSAR models with respect to • a defined endpoint • unambiguous algorithm • a defined domain of applicability • appropriate measure of goodness-of-fit, robustness and predictivity

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Principles of method if other than guideline:
Calculation using QSAR Toolbox based on trend analysis within category members.

Test material

Reference
Name:
Unnamed

Test organisms

Test organisms (species):
other: Desmodesmus subspicatus, Desmodesmus subspicatus (reported as Scenedesmus subspicatus), Pseudokirchnerella subcapitata, Scenedesmus subspicatus (new name: Desmodesmus subspicatus), Selenastrum capricornutum (new name: Pseudokirchnerella subcapitata)

Study design

Total exposure duration:
72 h

Results and discussion

Effect concentrationsopen allclose all
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
784 mg/L
Conc. based on:
test mat.
Basis for effect:
growth rate
Key result
Duration:
72 h
Dose descriptor:
EC10
Effect conc.:
375 mg/L
Conc. based on:
test mat.
Basis for effect:
growth rate

Applicant's summary and conclusion