Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: Data insufficient for assessment, obvious technical deficiency

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1990
Report date:
1990

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Isobutyrophenone
EC Number:
210-275-0
EC Name:
Isobutyrophenone
Cas Number:
611-70-1
Molecular formula:
C10H12O
IUPAC Name:
2-methyl-1-phenylpropan-1-one
Details on test material:
- Name of test material (as cited in study report): Darocur Stufe 1

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
activated sludge, industrial

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no

Test conditions

Test temperature:
20 °C
Nominal and measured concentrations:
Nominal test concentrations: 0.1, 0.2, 0.5, 0.75, 1.0, 2.0 mg/L

Results and discussion

Effect concentrationsopen allclose all
Dose descriptor:
other: EC20
Effect conc.:
0.2 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate
Dose descriptor:
EC50
Effect conc.:
0.5 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate
Dose descriptor:
other: EC80
Effect conc.:
1.7 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate

Applicant's summary and conclusion