Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study obtained through inquiry process; SNIF file obtained from ECHA.

Data source

Reference
Reference Type:
other: SNIF
Title:
Unnamed
Year:
1993

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
Deviations:
not specified
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
Body responsible for the test
IUPAC Name:
Body responsible for the test
Test material form:
not specified

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
not specified

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
other: aerobic
Water media type:
not specified
Total exposure duration:
3 h

Test conditions

Reference substance (positive control):
not specified

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
IC50
Effect conc.:
> 100 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
IC50 (3h) > 100 mg/L
Executive summary:

The acute toxicity of the test substance to microorganisms has been determined in a test according to OECD-Guideline 209. The IC50 (3h) was > 100 mg/L. This result shows that at a concentration in excess of the water solubility level of the test material, the test material does not have an effect on the respiration rate of activated sewage sludge.

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