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)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002

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):
Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Details on test organisms:
Scendesmus subspicatus Brinkmann 1953/SAG 86.81

Study design

Test type:
static
Total exposure duration:
72 h

Test conditions

Test temperature:
23+-2 °C
pH:
7.76-9.2

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
other: EbC50
Effect conc.:
0.04 mg/L
Conc. based on:
test mat.
Basis for effect:
biomass
Remarks on result:
other: 95% CL 0.03-0.05
Duration:
72 h
Dose descriptor:
other: ErC50
Effect conc.:
0.12 mg/L
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other: 95% CL 0.10-0.14

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
72-hr ErC50 for Scendesmus subspicatus is 0.12 mg/L, 72-hr EbC50 for Scendesmus subspicatus is 0.04 mg/L.