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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Endpoint:
biodegradation in water: screening test, other
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1982
Report date:
1982

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
- Principle of test: Biochemical oxygen demand determined after 5 d at 20°C inoculation; COD via titration
- Parameters analysed / observed: oxygen content at 0 h and after 5 d inoculation
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
N-[2-[(2,6-dicyano-4-nitrophenyl)azo]-5-(diethylamino)phenyl]acetamide
EC Number:
255-473-8
EC Name:
N-[2-[(2,6-dicyano-4-nitrophenyl)azo]-5-(diethylamino)phenyl]acetamide
Cas Number:
41642-51-7
Molecular formula:
C20H19N7O3
IUPAC Name:
N-{2-[(2,6-dicyano-4-nitrophenyl)diazenyl]-5-(diethylamino)phenyl}acetamide
Test material form:
liquid
Details on test material:
Terasil Blau 219 Re fl.

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, industrial (adaptation not specified)
Duration of test (contact time):
5 d

Results and discussion

% Degradation
Parameter:
other: BOD5
Remarks on result:
other: BOD5 measurement

BOD5 / COD results

BOD5 / CODopen allclose all
Key result
Parameter:
BOD5
Value:
215 mg O2/g test mat.
Remarks on result:
other: Test material concentration: 20 mg/L
Parameter:
COD
Value:
678 mg O2/g test mat.

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Interpretation of results:
not readily biodegradable
Conclusions:
The ratio BOD5 / COD is 0.32 indicating no potential for ready biodegradation.