Registration Dossier
Registration Dossier
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EC number: 900-064-8 | CAS number: -
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: guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 994
- Report date:
- 1994
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:
- Mixture of acrylic acid 4-[(chlorocarbonyl)oxy]butyl ester and 3-chloropropanoic acid 4-[(chlorocarbonyl)oxy]butyl ester
- EC Number:
- 900-064-8
- Molecular formula:
- unspecified
- IUPAC Name:
- Mixture of acrylic acid 4-[(chlorocarbonyl)oxy]butyl ester and 3-chloropropanoic acid 4-[(chlorocarbonyl)oxy]butyl ester
- Details on test material:
- Acryloxibutylchlorformiat: ca. 75 %
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 22 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 20 mg/L
- Based on:
- DOC
- Initial conc.:
- 53.5 mg/L
- Based on:
- test mat.
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 96
- Sampling time:
- 22 d
- Details on results:
- - abiotic elimination control (w/o inoculum, w mercury chloride to avoid microbial degradation): 0 % (22 d)
- adsorption control (w inoculum, w mercury chloride): 0 % (22 d)
- inhibition control (test substance/reference substance: each 20 mg/L DOC): 90 % (22 d)
Kinetic of test substance (in %):
= 0 after 1 day(s)
= 24 after 3 day(s)
= 71 after 7 day(s)
= 94 after 14 day(s)
= 96 after 18 day(s)
Kinetic of control substance (in %):
= 23 after 3 day(s)
= 70 after 7 day(s)
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
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