Registration Dossier
Registration Dossier
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EC number: 413-110-2 | CAS number: 135861-56-2
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- The information of this endpoint has been provided by ECHA as a result of an inquiry, thus the full access to data in the report is not accessible to the registrant. However the reliability is estimated to be at level 1: Study conducted in accordance with generally accepted scientific principles. Possible deficiencies do not affect the quality of relevant results.
Data source
Reference
- Reference Type:
- other: Body responsible for the test
- Title:
- Unnamed
- Year:
- 1 993
- Report date:
- 1993
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Sturm. OCDE Guideline 301 B (1984) EEC Directive 84/449 (1984) - Annex V - Method C4-C (CO2 evolution)
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 413-110-2
- EC Name:
- -
- Cas Number:
- 135861-56-2
- Molecular formula:
- C24H30O6
- IUPAC Name:
- 1-[2,6-bis(3,4-dimethylphenyl)-hexahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Constituent 1
Study design
Reference substance
- Reference substance:
- other: Sodium acetate
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 28
- Sampling time:
- 28 d
- Details on results:
- Points of degradation plot (test substance):
4 % degradation after 2 d
11 % degradation after 6 d
18 % degradation after 10 d
23 % degradation after 14 d
28 % degradation after 28 d
BOD5 / COD results
- Results with reference substance:
- Points of degradation plot (reference substance):
24 % degradation after 2 d
69 % degradation after 6 d
88 % degradation after 10 d
100 % degradation after 14 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The test method is applicable for poorly soluble substances, but the test details are not available. As the test has been conducted under GLP and already assessed, it is considered as valid. There is no information available on the dispersing method, nor validity criteria. Based on the test result, the test substance is assessed as not readily biodegradable.
- Executive summary:
The test substance was not readily biodegradable in an test based on respirometic CO2 evolution (C.4 -C) performed under CLP. This study is selected as key.
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