Registration Dossier

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
from 1995-11-08 to 1995-11-09
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: 2e

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report Date:
1995

Materials and methods

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

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Date of receipt: 1995-08-31
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
not relevant

Sampling and analysis

Analytical monitoring:
not specified
Details on sampling:
no data

Test solutions

Vehicle:
no
Details on test solutions:
no data

Test organisms

Test organisms (species):
activated sludge
Details on inoculum:
- Initial biomass concentration: 1600 mg/L
- Source: Sindlingen

Study design

Water media type:
freshwater
Limit test:
no
Total exposure duration:
3 h

Test conditions

Hardness:
no data
Test temperature:
18.9 - 19.3°C
pH:
7.0 - 7.3
Dissolved oxygen:
no data
Salinity:
no data
Nominal and measured concentrations:
Nominal concentrations: from 62.5 to 1000 mg/L
Reference substance (positive control):
yes
Remarks:
3,5-dichlorophenol

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
948 mg/L
Details on results:
EC20-3h = 92 mg/L and EC80-3h > 1000 mg/L

Applicant's summary and conclusion