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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)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Tri(tridecyl) benzene-1,2,4-tricarboxylate
EC Number:
302-446-4
EC Name:
Tri(tridecyl) benzene-1,2,4-tricarboxylate
Cas Number:
94109-09-8
Molecular formula:
C48H84O6
IUPAC Name:
tri(tridecyl) benzene-1,2,4-tricarboxylate
Test material form:
liquid
Details on test material:
- Moisture content: <= 0.1%
Specific details on test material used for the study:
lot P-2960F-10, manufactured June 29, 2010

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, adapted
Details on inoculum:
- Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): Annacis Island domestic wastewater treatment pilot
Duration of test (contact time):
ca. 28 d
Initial test substance concentration
Initial conc.:
ca. 2 other: % w/w
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption

Results and discussion

% Degradation
Key result
Parameter:
% degradation (O2 consumption)
Value:
ca. 2
Sampling time:
28 d

BOD5 / COD results

Results with reference substance:
reference susbtance is canola oil and the biodegradation of canola oil at the end of the 28 days is 67%.

Applicant's summary and conclusion

Validity criteria fulfilled:
no
Interpretation of results:
not readily biodegradable
Conclusions:
Tridecyl Trimellilate cannot be considered readily biodegradable because biodegradation did not surpass the 60% mark within a 10-d window during the 28-d exposure period.

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