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Diss Factsheets
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EC number: 209-984-8 | CAS number: 600-14-6
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- significant methodological deficiencies
Data source
Reference
- Reference Type:
- publication
- Title:
- Structural Determinants in the Oxidation of Aliphatic Compounds by Activated Sludge
- Author:
- Gerhold, RM and Malaney GW
- Year:
- 1 966
- Bibliographic source:
- Journal (Water Pollution Control Federation), 38(4): 562–579
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- - Principle of test:
500 mg/l test material and a mixed liquor of municpal activated sludge (detailed below) were tested in a flask at a total volume of 20 ml was placed in a water bath at 20°C. Oxygen uptake was determined for 24 hours, with measurements at 0.5-5 hour intervals.
Activated sludge was obtained from the following source:
1. The Columbus, Ohio, municipal treatment plant, which treated 70 mgd (265,000 m³/day) of combined do mestic and industrial wastes. Suspended solids concentrations in the plant mixed liquor averaged 4200 mg/l.
2. The Hilliard, Ohio, municipal plant, which treated 450,000 gpd (1,700 m³/day) of domestic waste water. Suspended solids averaged 1,600 mg/l.
3. The Brookside Estates treatment plant at Linworth, Ohio, which treated 37,000 gpd (140 m³/day) of residential wastes. Suspended solids averaged 2,900 mg/l.
- Parameters analysed / observed:
Oxygen uptake - GLP compliance:
- no
Test material
- Reference substance name:
- Pentane-2,3-dione
- EC Number:
- 209-984-8
- EC Name:
- Pentane-2,3-dione
- Cas Number:
- 600-14-6
- Molecular formula:
- C5H8O2
- IUPAC Name:
- pentane-2,3-dione
- Test material form:
- liquid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- Activated sludge was obtained from the following source:
1. The Columbus, Ohio, municipal treatment plant, which treated 70 mgd (265,000 m³/day) of combined do mestic and industrial wastes. Suspended solids concentrations in the plant mixed liquor averaged 4200 mg/l.
2. The Hilliard, Ohio, municipal plant, which treated 450,000 gpd (1,700 m³/day) of domestic waste water. Suspended solids averaged 1,600 mg/l.
3. The Brookside Estates treatment plant at Linworth, Ohio, which treated 37,000 gpd (140 m³/day) of residential wastes. Suspended solids averaged 2,900 mg/l.
Mixed liquor was obtained fom the aeration tank on the day of the experiment. Supended solids concentration was adjusted to 2500 mg/l by either removal of supernatant liquid or addition of tap water. The sludge was not washed and no mineral salts were added. - Duration of test (contact time):
- 24 h
Initial test substance concentration
- Initial conc.:
- 500 mg/L
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (O2 consumption)
- Sampling time:
- 6 h
- Remarks on result:
- not determinable because of methodological limitations
- Remarks:
- Test material was reported to be 'toxic'
- Parameter:
- % degradation (O2 consumption)
- Sampling time:
- 12 h
- Remarks on result:
- not determinable
- Remarks:
- Test material was reported to be 'toxic'
- Parameter:
- % degradation (O2 consumption)
- Sampling time:
- 24 h
- Remarks on result:
- not determinable
- Remarks:
- Test material was reported to be 'toxic'
Applicant's summary and conclusion
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- The theoretical oxygen demand of the test material could not be determined as the test concentration was toxic to microorganisms. Therefore, under the test conditions, it is assumed that no biodegradation was observed.
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