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Environmental fate & pathways

Biodegradation in water: screening tests

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Link to relevant study record(s)

biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016-03-19 till 2016-04-15
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
without GLP
according to guideline
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
Version / remarks:
adopted July 17, 1992
GLP compliance:
The substance is known to be not readily biodegradable. Therefore a non-GLP study was adequate to prove the poor biodegradability.
Oxygen conditions:
Inoculum or test system:
activated sludge, domestic, non-adapted
Duration of test (contact time):
28 d
Initial conc.:
41 mg/L
Based on:
test mat.
Preliminary study:
Result of the preliminary study:
The biodegradation of the test item (2 replicates) does not reach the 10 % level (beginning of biodegradation) until test end. The mean biodegradation on day 28 was 6 %.
Key result
other: BOD
ca. 6
Sampling time:
28 d
Remarks on result:
other: not readily biodegradable
Details on results:
not readily biodegradable
Results with reference substance:
no reference substance used for limit test
Validity criteria fulfilled:
Interpretation of results:
not readily biodegradable
The test item is classified as not readily biodegradable within 28 days.

Description of key information

not readily biodegradable

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed
Type of water:

Additional information