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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
Study period:
January 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study by a laboratory having a GLP certificate

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Report date:
2009

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Certificat on November 27th 2007

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, adapted
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
0.6 g/L
Based on:
ThOD/L

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
6
Sampling time:
28 d
Details on results:
The calculated theorical oxygen demand of EPOXY RESIN T1800 is 1.62 o2/mg. This theorical oxygen demand is caculated by assuming formation of ammonium, water and carbon dioxide (if no nitrification is observed).
EPOXY RESIN T1800 did not inhibit the micro-organisms as shown by the toxicity control flasq where biodegration percentage is already 42%, higher than 25% after 14 days.

BOD5 / COD results

BOD5 / COD
Parameter:
BOD5
Value:
0.1 g O2/g test mat.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
EPOXY RESIN T1800 is not readily biodegradable.