Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 246-073-4 | CAS number: 24199-46-0
- 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:
- 02.07. - 26.11.2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: According to OECD guideline under GLP
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
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:
- Not relevant
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 6-methyloct-5-en-2-one
- EC Number:
- 246-073-4
- EC Name:
- 6-methyloct-5-en-2-one
- Cas Number:
- 24199-46-0
- Molecular formula:
- C9H16O
- IUPAC Name:
- 6-methyloct-5-en-2-one
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 58
- Sampling time:
- 28 d
- Details on results:
- The percent biodegradation of the test item was calculated based on the theoretical oxygen demand (ThOD) of 2.85 mg 02/mg test item.
The biochemical oxygen demand (BOD) of Ethylheptenone Technical in the test media
significantly increased from about Exposure Day 3 until test termination after 28 days. At the
end of the 28-day exposure period, the mean biodegradation of Ethylheptenone Technical amounted to 59%.
Therefore, Ethylheptenone Technical was found to be biodegradable under the test
conditions within 28 days. However, the pass level for ready biodegradability, i.e.
biodegradation of at least 60% of the ThOD in a 10-day window within the 28-day period of the test, was not reached.
Consequently, Ethylheptenone Technical was not readily biodegradable under the test conditions within 28 days.
BOD5 / COD results
- Results with reference substance:
- In the procedure controls, the reference item was degraded by an average of 87% by
Exposure Day 14, thus confirming suitability of the activated sludge. At the end of the test
(Day 28), the reference item was degraded by an average of 90%.
Any other information on results incl. tables
No other information
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: biodegradable, the pass level for ready biodegradability was not reached
- Conclusions:
- At the end of the 28-day exposure period, the mean biodegradation of Ethylheptenone Technical amounted to 59%. Consequently, Ethylheptenone Technical was found to be biodegradable under the test conditions within 28 days. However, the pass level for ready biodegradability, i.e. biodegradation of at least 60% of the ThOD in a 10-day window within the 28-day period of the test, was not reached.
- Executive summary:
The test item Ethylheptenone Technical was investigated for its ready biodegradability in a manometric respirometry test over 28 days according to EU Commission Directive 92/69 EEC, C.4-D (1992) and OECD Guideline for Testing of Chemicals No. 301 F (1992). The percent biodegradation of the test item was calculated based on the theoretical oxygen demand (ThOD) of 2.85 mg Odmg test item. The biochemical oxygen demand (BOD) of Ethylheptenone Technical in the test media significantly increased from about Exposure Day 3 until test termination after 28 days. At the end of the 28-day exposure period, the mean biodegradation of Ethylheptenone Technical amounted to 59%. Consequently, Ethylheptenone Technical was found to be biodegradable under the test conditions within 28 days. However, the pass level for ready biodegradability, i.e. biodegradation of at least 60% of the ThOD in a 10-day window within the 28-day period of the test, was not reached. In the toxicity control, containing both Ethylheptenone Technical and the reference item sodium benzoate, Ethylheptenone Technical had no inhibitory effect on the activity of activated sludge microorganisms at the tested concentration of 101 mg/L. In the procedure controls, the reference item sodium benzoate was degraded by an average of 87% by Exposure Day 14, and reached an average biodegradation of 90% by the end of the test (Day 28), thus confirming suitability of the activated sludge.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.