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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:
comparable to guideline study
Justification for type of information:
Pyridine is the core structure of 1-methylpyridinio-3-carboxylate

Data source

Reference
Reference Type:
publication
Title:
A Correlation Study Biodegradable Determinations with Various Chemicals in Various Tests
Author:
Gerike
Year:
1979
Bibliographic source:
Ecotoxicology and Environmental Safety 3: 159-173

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
Deviations:
not specified
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
Pyridine
EC Number:
203-809-9
EC Name:
Pyridine
Cas Number:
110-86-1
IUPAC Name:
pyridine
Test material form:
liquid

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
mixture of sewage, soil and natural water
Duration of test (contact time):
> 14 - < 28 d

Results and discussion

% Degradation
Key result
Parameter:
% degradation (DOC removal)
Value:
97
Sampling time:
19 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
Pyridine was tested readily biodegradability

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