Registration Dossier

Ecotoxicological information

Toxicity to microorganisms

Currently viewing:

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
2011-08-29 to 2011-08-30
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report Date:
2011

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
GLP compliance:
yes (incl. certificate)
Remarks:
according to German Chemikaliengesetzt and directive 88/320/EEC

Test material

Reference
Name:
Unnamed
Type:
Constituent

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
activated sludge

Study design

Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
3 h

Test conditions

Hardness:
Not determined
Test temperature:
21.4 °C
pH:
7.31 (activated sludge)
7.42 (synthetic waste water)
Salinity:
None, freshwater
Reference substance (positive control):
yes
Remarks:
Copper (II) sulphate pentahydrate p.a.

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
NOEC
Effect conc.:
1 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate
Reported statistics and error estimates:
The coefficient of variation of the oxygen uptake rates of the control replicates was calculated with standard methods

Applicant's summary and conclusion

Validity criteria fulfilled:
yes