Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

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

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Test organisms

Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

Study design

Test type:
not specified
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
72 h

Test conditions

Test temperature:
23.1 ~23.7 °C
pH:
7.70 ~ 7.87

Results and discussion

Effect concentrationsopen allclose all
Key result
Duration:
72 h
Dose descriptor:
EL50
Effect conc.:
> 96 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other:
Remarks:
Median effective loading rate of average specific growth rate, based on nominal concentration
Key result
Duration:
72 h
Dose descriptor:
NOELR
Effect conc.:
ca. 24 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other:
Remarks:
Median effective loading rate of average specific growth rate, based on nominal concentration
Key result
Duration:
72 h
Dose descriptor:
LOELR
Effect conc.:
ca. 48 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other:
Remarks:
Median effective loading rate of average specific growth rate, based on nominal concentration
Key result
Duration:
72 h
Dose descriptor:
EL50
Effect conc.:
ca. 61.23 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other:
Remarks:
Median effective loading rate of yield, based on nominal concentration
Key result
Duration:
72 h
Dose descriptor:
NOELR
Effect conc.:
ca. 6 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other:
Remarks:
Median effective loading rate of yield, based on nominal concentration
Key result
Duration:
72 h
Dose descriptor:
LOELR
Effect conc.:
ca. 12 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other:
Remarks:
Median effective loading rate of yield, based on nominal concentration

Applicant's summary and conclusion