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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
ISO 7827 (Evaluation in an Aqueous Medium of the "Ultimate" Aerobic Biodegradability of Organic Compounds - Method by Analysis of Dissolved Organic Carbon (DOC))
GLP compliance:
no
Oxygen conditions:
aerobic
Inoculum or test system:
sewage, domestic (adaptation not specified)
Details on inoculum:
- Source of inoculum/activated sludge: The effluent of a domestic sewage treatment plant was used
Duration of test (contact time):
29 d
Initial conc.:
19.5 mg/L
Based on:
DOC
Key result
Parameter:
% degradation (DOC removal)
Value:
81
Sampling time:
28 d
Details on results:
Kinetic of test substance (in %):
= 10 after 21 days
= 81 after 28 days
= 92 after 29 dyas
= 92 after 29 days
Interpretation of results:
readily biodegradable

Description of key information

Readily biodegradable: 81% in 28 days (ISO 7827)

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Sodium prop-2-enesulphonate is classified as readily biodegradable. In a DOC removal test according to ISO 7827 the biodegradation of sodiumprop-2-enesulphonate was investigated [BASF AG, 1989]. After 28 days 81 % degradation was determined.