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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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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 (Freshwater Alga and Cyanobacteria, Growth Inhibition Test)
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid

Sampling and analysis

Details on sampling:
Purity:99.53%
Appearance: yellow to slight yellow clear liquid
Storage conditions: cool, dry place, protected from fire

Test organisms

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

Study design

Test type:
not specified
Water media type:
other: distilled water
Total exposure duration:
72 h

Test conditions

Test temperature:
21±2Centigrade
pH:
8.1±0.2
Reference substance (positive control):
yes

Results and discussion

Effect concentrations
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
10.35 mg/L

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
Under these conditions, the EC50 for the test substance “Estragole” resulted to be 10.35 mg/l.