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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Study period:
2008-2009
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2-bis({[3-(4-ethylpiperazin-1-yl)propanoyl]oxy}methyl)butyl 3-(4-ethylpiperazin-1-yl)propanoate
EC Number:
700-404-3
Cas Number:
127929-37-7
Molecular formula:
C33H62N6O6
IUPAC Name:
2,2-bis({[3-(4-ethylpiperazin-1-yl)propanoyl]oxy}methyl)butyl 3-(4-ethylpiperazin-1-yl)propanoate

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, adapted
Duration of test (contact time):
> 1 - <= 29 d
Initial test substance concentration
Initial conc.:
>= 18.3 - <= 20 mg/L
Based on:
DOC

Results and discussion

% Degradation
Parameter:
% degradation (CO2 evolution)
Value:
>= 13 - <= 16.6
St. dev.:
1.8
Sampling time:
28 d
Details on results:
The following data were determined for the test item B 1061:
10-day-window: not detected
degradation at the end of 10-day-windows: none
degradation at the end of the test: 15 %
demanded pass level: 60 % at the end of 10-day-window
Therefore, regardless of application of the 10-day-window, B 1061 is not readily biodegradable following OECD 301B/EU C.4-C.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
other: not readily biodegradable
Executive summary:

Results for the test item B 1061 are:

- The test item B 1061 is considered as " not readily biodegradable".

- The degree of biodegradation reached 15 % after 28 days.

- A 10 -day-window was not observed. The pass level of 60 % given in the OECD guideline was missed.

- The abiotic degradation reached 9 %.

- All validity criteria were met.