Registration Dossier
Registration Dossier
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EC number: 927-505-7 | CAS number: 101153-84-8
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, to GLP.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 835.3110 (Ready Biodegradability)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: ECHA Guidance for the Implementation of REACH Guidance on information requirements and chemical safety assessment, Chapter R.7b: Endpoint specific guidance, May 2008 (version 1.1)
- Qualifier:
- according to guideline
- Guideline:
- other: Revised Introduction to the OECD Guidelines for Testing of Chemicals, Section 3, Part 1, 2006
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 3-methyl-5-oxopentyl acetate
- EC Number:
- 927-505-7
- Cas Number:
- 101153-84-8
- Molecular formula:
- C8H14O3
- IUPAC Name:
- 3-methyl-5-oxopentyl acetate
- Test material form:
- other: liquid
- Details on test material:
- Commercial Name: Acetoxy Methyl Pentanal
Chemical Nature: 5-Acetoxy-3-methylpentanal
Emperical Formula: C6H14O3
Molecular Weight: 158.19 g/mol
CAS No.: 101153-84-8
Aspect: liquid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- 60 d
Initial test substance concentration
- Initial conc.:
- 30 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Reference substance
- Reference substance:
- other: sodium benzoate
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 15
- Sampling time:
- 1 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 83
- Sampling time:
- 11 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 95
- Sampling time:
- 28 d
- Details on results:
- Acetoxy Methyl Pentanal undergoes 95% biodegradation after 28 days in the test condition. The 10-day window criterion is also fulfilled (15% biodegradation on day 1 and 83% on day 11).
Acetoxy Methyl Pentanal did not exhibit the intrinsic respiration of the inoculum at the test concentration and was therefore considered to be non-toxic to the inoculum at the test concentration.
Thus, Acetoxy Methyl Pentanal should be regarded as readily biodegradable according to this test.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Acetoxy Methyl Pentanal should be regarded as readily biodegradable according to this test.
- Executive summary:
Acetoxy Methyl Pentanal undergoes 95% biodegradation after 28 days in the test condition. The 10-day window criterion is also fulfilled (15% biodegradation on day 1 and 83% on day 11).
Acetoxy Methyl Pentanal did not exhibit the intrinsic respiration of the inoculum at the test concentration and was therefore considered to be non-toxic to the inoculum at the test concentration.
Thus,Acetoxy Methyl Pentanal should be regarded as readily biodegradable according to this test.
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