Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1997

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.4-E (Determination of the "Ready" Biodegradability - Closed Bottle Test)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2,3,4,9-tetrahydro-1H-carbazol-3-one
EC Number:
610-619-3
Cas Number:
51145-61-0
Molecular formula:
C12H11NO
IUPAC Name:
2,3,4,9-tetrahydro-1H-carbazol-3-one

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge (adaptation not specified)
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
2.6 mg/L
Based on:
test mat.

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (O2 consumption)
Value:
0
Sampling time:
7 d
Parameter:
% degradation (O2 consumption)
Value:
0
Sampling time:
14 d
Parameter:
% degradation (O2 consumption)
Value:
1
Sampling time:
21 d
Parameter:
% degradation (O2 consumption)
Value:
4
Sampling time:
28 d

Applicant's summary and conclusion

Interpretation of results:
under test conditions no biodegradation observed