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Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1993
Report date:
1993

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
Deviations:
yes
Qualifier:
according to guideline
Guideline:
other:

Test material

Constituent 1
Test material form:
not specified

Test organisms

Test organisms (species):
activated sludge of a predominantly domestic sewage

Study design

Test type:
not specified
Water media type:
not specified
Limit test:
no
Total exposure duration:
3 h

Test conditions

Reference substance (positive control):
yes

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
IC50
Effect conc.:
> 320 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration

Applicant's summary and conclusion

Validity criteria fulfilled:
yes