Registration Dossier
Registration Dossier
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EC number: 268-717-3 | CAS number: 68133-90-4
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Not reported
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Non-GLP, guideline, published in peer reviewed literature, acceptable with restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: tested with two ready biodegradability tests: Modified OECD Test and Modified Sturm Test
- Deviations:
- not specified
- GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Inoculum concentration was 30mg suspended solids/l
- Duration of test (contact time):
- 28 d
- Initial conc.:
- other: No data
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- No data
- Reference substance:
- aniline
- Preliminary study:
- 94% in the Modified OECD Screening test. The pass level in the modified OECD screening test was reached (≥70% DOC removal after 28 days)
- Test performance:
- No data
- Parameter:
- % degradation (DOC removal)
- Value:
- 97
- Remarks on result:
- other: fresh sludge
- Parameter:
- other: Th02
- Value:
- 92
- Remarks on result:
- other: Modified sturm test
- Results with reference substance:
- %DOC 99; %ThCO2 73
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Monoethanolamine (2-aminoethanol) was found to be readily biodegradable.
- Executive summary:
This study states that a standard guideline was followed, however there are limited data on the methods provided. This study is considered acceptable but with restrictions. Monoethanolamine (2 -aminoethanol) was found to be readily biodegradable.
Reference
No further details
Description of key information
Biodegradation is not relevant for inorganic substances, but as this substance has an organic component the biodegradation potential of the organic part of the test item has been assessed. Monoethanolamine (2-aminoethanol) was found to be readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Biodegradation is not relevant for inorganic substances, but as this substance has an organic component the biodegradation potential of the organic part of the test item has been assessed.
The substance was tested following two ready biodegradation methods, a modified OECD test and a modified sturm test (Kuenemann et al, 1992). Results are reported in a published paper, and although there are some limitations with the reporting of method details the paper is considered to be suitable for use for assessing this endpoint. Monoethanolamine (2-aminoethanol) was found to be readily biodegradable as the pass criterion of >70% degradation was met with 97 and 92% degradation observed.
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