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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Variety of data sources and peer reviewed data.

Data source

Reference
Reference Type:
secondary source
Title:
Biodegradation in water
Author:
MITI
Year:
1992
Bibliographic source:
HSDB/ SIDS / MITI: Chemicals Inspection and Testing Institute. Japan Chemical Industry Ecology - Toxicology and Information Center. ISBN 4-89074-101-1, 1992. Peer Reviwed

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Thiophene
EC Number:
203-729-4
EC Name:
Thiophene
Cas Number:
110-02-1
Molecular formula:
C4H4S
IUPAC Name:
thiophene
Details on test material:
The concentration of the test substance was 100 mg/L and the concentration of the activated sludge was 30 mg/L as suspended solid matters.

Study design

Oxygen conditions:
not specified
Inoculum or test system:
activated sludge (adaptation not specified)
Duration of test (contact time):
14 d

Results and discussion

% Degradation
Value:
0
Sampling time:
14 d
Remarks on result:
other: by BOD

Applicant's summary and conclusion

Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
Thiophene is not readily biodegradable according to a protocol similar to OECD TG 301C.