Registration Dossier

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study
Study period:
05 September 2008 - 05 September 2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test performed in accordance with OECD guidelines.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report Date:
2008

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
Qualifier:
according to
Guideline:
EU Method C.11 (Biodegradation: Activated Sludge Respiration Inhibition Test)
Qualifier:
according to
Guideline:
ISO 8192 (Water quality - Test for inhibition of oxygen consumption by activated sludge for carbonaceous and ammonium oxidation)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
Substance type: white powder
- Physical state: solid
- Analytical purity: 99.80%
- Expiration date of the lot/batch: 31 Jan 2009
- Storage condition of test material: At room temperature in the dark

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
not specified
Water media type:
freshwater
Limit test:
no
Total exposure duration:
3 h
Remarks on exposure duration:
during which stirring and aeration took place.

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
< 1 000 mg/L
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate

Applicant's summary and conclusion

Conclusions:
EC 50 of the test substance exceeded 1000mg/l (based on normal conditions)
Executive summary:

Under the conditions of this present test, the EC 50 of the test substance exceeded 1000mg/l (based on normal conditions).