Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study. Scientifically acceptable.

Data source

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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
(E)-3-formylbut-2-enyl acetate
EC Number:
247-825-4
EC Name:
(E)-3-formylbut-2-enyl acetate
Cas Number:
26586-02-7
Molecular formula:
C7H10O3
IUPAC Name:
(2E)-3-methyl-4-oxobut-2-en-1-yl acetate
Details on test material:
- Name of test material (as cited in study report): C5-acetat

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)
Duration of test (contact time):
14 d
Initial test substance concentration
Initial conc.:
100 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
68
Sampling time:
14 d
Details on results:
Kinetic of test substance (in %):
< 10 after 4 ca. 55 after 7 ca. 55 after 14 ca. 55 after 21 > 60 after 28 Kinetic of control substance (in %):
ca. 60 after 9 day(s)
> 60 after 10 day(s)

Applicant's summary and conclusion

Interpretation of results:
other: biodegradable