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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:
comparable to guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
Deviations:
not specified
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
3,4-diethoxyphenethylamine
EC Number:
262-752-8
EC Name:
3,4-diethoxyphenethylamine
Cas Number:
61381-04-2
Molecular formula:
C12H19NO2
IUPAC Name:
3,4-diethoxyphenethylamine
Test material form:
liquid

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge (adaptation not specified)
Details on inoculum:
Aerobic activated sludge, microorganisms from a domestic waste water treatment plant was supplied by the sewage plant Rossdorf, Germany.
Duration of test (contact time):
ca. 28 d
Initial test substance concentration
Initial conc.:
0.102 g/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption
Reference substance
Reference substance:
benzoic acid, sodium salt

Results and discussion

% Degradation
Key result
Parameter:
% degradation (O2 consumption)
Value:
0
Sampling time:
28 d
Details on results:
The criterion for ready biodegradability under the conditions of a manometric respirometry test is the 10-day window, describing the period between reaching at least 10% degradation and 60% degradation.
This period should not exceed 10 days. The mean biodegradation till the test end after 28 days was 0% (ThODNO3, THODNH4).

BOD5 / COD results

BOD5 / COD
Key result
Parameter:
ThOD
Value:
0 mg O2/g test mat.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
Based on this test condition the diethoxy amine is not biodegradable