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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)

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed

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:
Iron (III) tris(4-methylbenzenesulfonate)
EC Number:
420-960-8
EC Name:
Iron (III) tris(4-methylbenzenesulfonate)
Cas Number:
77214-82-5
Molecular formula:
C21 H21 Fe O9 S3
IUPAC Name:
iron(3+) tris(4-methylbenzene-1-sulfonate)
Test material form:
solid: pellets

Study design

Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
100 mg/L
Reference substance
Reference substance:
aniline

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (O2 consumption)
Value:
70
Sampling time:
10 d
Parameter:
% degradation (O2 consumption)
Value:
77
Sampling time:
20 d
Parameter:
% degradation (O2 consumption)
Value:
77
Sampling time:
28 d

BOD5 / COD results

Results with reference substance:
71 % after 10 d
80 % after 20 d
82 % after 28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable