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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:
Jan - Feb 2002
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Test performed according OECD 301 but in a non GLP lab
Cross-reference
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002
Report date:
2002

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
Deviations:
no
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
(E,E,E)-2,7-dimethylocta-2,4,6-trienedial
EC Number:
225-756-0
EC Name:
(E,E,E)-2,7-dimethylocta-2,4,6-trienedial
Cas Number:
5056-17-7
Molecular formula:
C10H12O2
IUPAC Name:
(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Study design

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

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
93
Sampling time:
28 d
Details on results:
Substance is readily biodegradable, 10- day window reached

Any other information on results incl. tables

-

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
The substance is readily biodegradable
Executive summary:

Due to the unsolubility of the substance in water the OECD 301 F was choosen.

100 mg test substance /l was stirred in a closed flask for 28 days. The consumption of the oxigen was determined by measuring the quantity of oxygen required to maintain constant gas volume. The amount of oxygen during the biodegradation of the test substance was expressed as a percentage of ThOD. The substance reached a biodegradation of 93% after 28 days. The 10 day window was achieved. The substance is readily biodegradble.