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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:
1997
Reliability:
1 (reliable without restriction)
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Test material information:
Composition 1
Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Details on inoculum:
Secondary effluent collected from Midland Municipal Wastewater treatment Plant (Midland, Michigan, USA).
Duration of test (contact time):
28 d
Initial conc.:
59.9 mg/L
Based on:
ThOD
Parameter followed for biodegradation estimation:
O2 consumption
Parameter followed for biodegradation estimation:
CO2 evolution
Reference substance:
benzoic acid, sodium salt
Parameter:
% degradation (O2 consumption)
Value:
92
Sampling time:
10 d
Parameter:
% degradation (O2 consumption)
Value:
101
Sampling time:
28 d
Results with reference substance:
Biodegradation 60% after 1.9 days and 96.8% after 28 days.
Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
2-hydroxyethyliminodi(acetic acid) disodium salt was found to be readily biodegradable under the conditions of OECD method 301F: Manometric respirometry test.
Executive summary:

2-hydroxyethyliminodi(acetic acid) disodium salt was found to be readily biodegradable under the conditions of OECD method 301F: Manometric respirometry test

Description of key information

2-hydroxyethyliminodi(acetic acid) disodium salt was found to be readily biodegradable under the conditions of OECD method 301F: Manometric respirometry test.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information