Registration Dossier

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1989
Report Date:
1989

Materials and methods

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

Test material

Reference
Name:
Unnamed
Type:
Constituent

Sampling and analysis

Analytical monitoring:
no

Test solutions

Details on test solutions:
The test item was weighed out (1000 mg/L ) directly into the test vessel. Due to the low solubility of the test item 100 mg/L solutizer were added.

Test organisms

Test organisms (species):
activated sludge

Study design

Limit test:
yes
Total exposure duration:
3 h

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
> 1 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.

Applicant's summary and conclusion

Executive summary:

A Respiration Inhibition Test according to OECD Guideline No. 209 was performed with the test item at Hoechst AG, Abteilung Umweltschutz, Frankfurt. The respiration rate of test item was measured after a contact time of three hours. TheEC50 is > 1000 mg/L to activated sludge.