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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study without restrictions

Data source

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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Imidazole-1-propionitrile(8CI);1-(2-Cyanoethyl)imidazole
EC Number:
607-301-1
Cas Number:
23996-53-4
Molecular formula:
C6H7N3
IUPAC Name:
Imidazole-1-propionitrile(8CI);1-(2-Cyanoethyl)imidazole
Details on test material:
- Name of test material (as cited in study report): Cyanethylimidazol
- Physical state: liquid
- Analytical purity:>97%

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Details on inoculum:
- Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): Laboratory wastewater plants treating municipal and synthetic sewage
- Preparation of inoculum for exposure: Inoculum was pre-aerated two days before the start of the test
- Initial cell/biomass concentration: 30 mg/L dry substance
Duration of test (contact time):
28 d
Initial test substance concentrationopen allclose all
Initial conc.:
33 mg/L
Based on:
test mat.
Initial conc.:
20 mg/L
Based on:
DOC
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
DOC removal

Results and discussion

% Degradation
Parameter:
% degradation (DOC removal)
Value:
0
Sampling time:
28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed