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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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Reliable, but some deficiencies in documentation. Non GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1989

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
4-chloro-α,α,α-trifluoro-o-toluidine
EC Number:
207-151-3
EC Name:
4-chloro-α,α,α-trifluoro-o-toluidine
Cas Number:
445-03-4
Molecular formula:
C7H5ClF3N
IUPAC Name:
4-chloro-α,α,α-trifluoro-o-toluidine

Study design

Inoculum or test system:
activated sludge, domestic, non-adapted
Details on inoculum:
Sludge of domestic sewage treatment plant of Frankfurt-Sindlingen.
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
4.75 mg/L
Based on:
COD
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
<= 16
Sampling time:
28 d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable

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