Registration Dossier
Registration Dossier
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EC number: 906-936-4 | CAS number: -
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- read-across based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Study period:
- Prior to or in 1994
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Published report which followed generally accepted guidelines but does not state whether it is a GLP study.
- Justification for type of information:
- Read across is based on the category approach. Please refer to attached category document.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 994
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- not specified
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 3,6,9-trioxaundecane-1,11-diol
- EC Number:
- 203-989-9
- EC Name:
- 3,6,9-trioxaundecane-1,11-diol
- Cas Number:
- 112-60-7
- Molecular formula:
- C8H18O5
- IUPAC Name:
- 2,2'-[oxybis(ethane-2,1-diyloxy)]diethanol
- Reference substance name:
- Tetraethylene glcyol
- IUPAC Name:
- Tetraethylene glcyol
- Test material form:
- not specified
- Details on test material:
- Tetraethylene glycol was used. No additional information was used.
Constituent 1
Constituent 2
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: course-filtered mixture of domestic treatment plant effluent and rich soil microorganisms or commercial Polyseed BOD seed
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- >= 0.1 - <= 2 mg/L
- Based on:
- test mat.
Results and discussion
% Degradationopen allclose all
- Parameter:
- not specified
- Value:
- 17
- Sampling time:
- 15 d
- Parameter:
- not specified
- Value:
- 40
- Sampling time:
- 28 d
- Details on results:
- Degradation % after time: 40% after 28 days
For each time period %: 17% up to 15 days and 40% up to 28 days
Breakdown products: None specified
Any other information on results incl. tables
No additional information available.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- inherently biodegradable, not fulfilling specific criteria
- Conclusions:
- Tetraethylene glycol is moderately biodegradable.
- Executive summary:
The biodegradation potential of tetraethylene glycol was examined using OECD 301D. Tetraethylene glycol is moderately biodegradable.
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