Registration Dossier
Registration Dossier
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EC number: 610-877-7 | CAS number: 52624-57-4
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: GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Oxirane, 2-methyl-, oligomeric reaction products with oxirane, ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1)
- EC Number:
- 610-877-7
- Cas Number:
- 52624-57-4
- Molecular formula:
- C6 H14 O3 . 3 (C3 H6 O . C2 H4 O)x
- IUPAC Name:
- Oxirane, 2-methyl-, oligomeric reaction products with oxirane, ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1)
- Details on test material:
- - Name of test material (as cited in study report): Triol 9053
- Physical state: colourless-yellowish liquid
- Analytical purity: not reported
- Batch No.: Kreisprobe Tank 16
- Storage condition of test material: at room temperature
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge: Activated sludge from Iaboratory wastewater plant treating municipal sewage.
- Concentration of sludge: 30 mg/L - Duration of test (contact time):
- 42 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 20 mg/L
- Based on:
- DOC
- Initial conc.:
- 35 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- TEST CONDITIONS
- Composition of medium: 1000 ml per vessel containing 65 ml test substance, 5 ml inoculum, 13 ml inorganic medium and 917 ml deionized water
- pH: 7.4
SAMPLING
- Sampling frequency: after 0, 1, 3, 5, 7, 10, 14, 17, 21, 24, 27, 28, 31, 35, 41, 42 days
CONTROL AND BLANK SYSTEM
- Inoculum blank: 2 replicates
- Abiotic sterile control: 1replicate
- Inhibition control: 1 replicate
- Reference substance: 1 replicate
- Adsorption control: 1 replicate
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (DOC removal)
- Value:
- 60 - 70
- Sampling time:
- 28 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 70 - 80
- Sampling time:
- 42 d
- Details on results:
- Degradation kinetic:
3% after Day 1
14% after Day 3
50% after Day 14
65% after Day 28
77% after Day 41
BOD5 / COD results
- Results with reference substance:
- Degredation kinetic:
3% after Day 1
86% after Day 3
Applicant's summary and conclusion
- Interpretation of results:
- other: biodegradable
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