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EC number: 274-446-1 | CAS number: 70214-76-5
- 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
- Study period:
- 09/2002 - 10/ 2002
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: study performed according to OCED and GLP guidelines
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 002
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- Principles of method if other than guideline:
- -
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 6,8-dimethylnona-3,5-dien-2-one
- EC Number:
- 274-446-1
- EC Name:
- 6,8-dimethylnona-3,5-dien-2-one
- Cas Number:
- 70214-76-5
- Molecular formula:
- C11H18O
- IUPAC Name:
- 6,8-dimethylnona-3,5-dien-2-one
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Duration of test (contact time):
- ca. 28 d
Initial test substance concentration
- Initial conc.:
- ca. 100 mg/L
- Based on:
- ThOD/L
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 62
- Sampling time:
- 28 d
- Details on results:
- -
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable, but failing 10-day window
- Conclusions:
- DIMETHYLNONADIENON did not reach the pass level of 60 % for ready biodegradability in the
Manometric Respirometry Test within the 10-d window and, therefore, cannot be termed as readily
biodegradable. However, the pass level of 60 % was reached within 28 days. The material is therefore
expected to degrade rapidly in the environment - Executive summary:
The biodegradability of DIMETHYLNONADIENON exposed to microorganisms derived from activated sludge of a municipal sewage treatment plant was investigated under aerobic static exposure conditions. The biodegradability of DIMETHYLNONADIENON based on O2 consumption was calculated to be 62 % after 28 days as compared to the theoretical oxygen demand (ThOD). The biodegradation of DIMETHYLNONADIENON reached 53 % at the end of the 1 O-d window. Biodegradation of the test substance was observed after a lag phase of about 5 days. The procedure control sodium benzoate reached 85 % biodegradation after 14 days, thus confirming suitability of inoculum and test conditions. The calculated biodegradation based on DOC measurement reached 98 % for DIMETHYLNONADIENON and 100 % for sodium benzoate. The data show that the consumed O2 was used for partial mineralization of the test compound, since the determined degradation values based on BOD were lower as compared to those based on DOC. DIMETHYLNONADIENON did not reach the pass level of 60 % for ready biodegradability in the Manometric Respirometry Test within the 10-d window and, therefore, cannot be termed as readily biodegradable. However, the pass level of 60 % was reached within 28 days. The material is therefore expected to degrade rapidly in the environment.
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