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Environmental fate & pathways

Biodegradation in water: screening tests

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Reference
Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 306 (Biodegradability in Seawater)
GLP compliance:
yes
Oxygen conditions:
aerobic
Inoculum or test system:
natural water: marine
Duration of test (contact time):
>= 5 - <= 28 d
Initial conc.:
1.266 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation:
DOC removal
Reference substance:
benzoic acid, sodium salt
Preliminary study:
yes, performed.
Key result
Parameter:
% degradation (DOC removal)
Value:
64.1
Sampling time:
28 d
Parameter:
% degradation (DOC removal)
Value:
39
Sampling time:
5 d
Parameter:
% degradation (DOC removal)
Value:
54.1
Sampling time:
14 d
Parameter:
% degradation (DOC removal)
Value:
64.3
Sampling time:
21 d
Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
After 28 days of analysis, the Test Item was 64,1 % degraded. The Test Item is therefore considered readily biodegradable.
Executive summary:

A sample of ALKANOLAMINE FATTY ESTER COMPOUNDS was in this study assessed for biodegradation properties by exposing the substance to micro-organisms in natural seawater. The test was carried out according to Lamberti S.p.A. POS 0300 which is an extract of the OECD Guideline, OECD 306 (Biodegradation in seawater). After 28 days of analysis, the Test Item was 64,1 % degraded. The Test Item is therefore considered readily biodegradable.

Description of key information

A sample of ALKANOLAMINE FATTY ESTER COMPOUNDS was in this study assessed for biodegradation properties by exposing the substance to micro-organisms in natural seawater. After 28 days of analysis, the Test Item was 64,1 % degraded. The Test Item is therefore considered readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable
Type of water:
marine water

Additional information