Registration Dossier
Registration Dossier
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EC number: 222-102-6 | CAS number: 3349-08-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening tests
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Standard method (Reliability commented in OECD SIDS: The authors did not address or correct for potential endogenous propionic acid production by microorganisms in the inoculum, which could have increased the overall amount of propionate present in the inoculum)
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Effect of chemical structure on the biodegradability of aliphatic acids and alcohols
- Author:
- Dias FF, Alexander M
- Year:
- 1 971
- Bibliographic source:
- Applied Microbiology 22: 1114-1118
- Reference Type:
- secondary source
- Title:
- Dossier n-Propionic Acid
- Author:
- OECD SIDS
- Year:
- 2 007
- Bibliographic source:
- OECD, July 2007
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Method: Warburg respirometer test
- GLP compliance:
- no
Test material
- Reference substance name:
- Propionic acid
- EC Number:
- 201-176-3
- EC Name:
- Propionic acid
- Cas Number:
- 79-09-4
- Molecular formula:
- C3H6O2
- IUPAC Name:
- propionic acid
- Details on test material:
- Purity not specified
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic, non-adapted
- Duration of test (contact time):
- 30 d
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Value:
- 60
- Sampling time:
- 2 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 71
- Sampling time:
- 5 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 73
- Sampling time:
- 10 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 74
- Sampling time:
- 30 d
Applicant's summary and conclusion
- Interpretation of results:
- other: according to OECD SIDS propionic acid is stated as readily biodegradable
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