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Diss Factsheets
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EC number: 429-320-2 | CAS number: 24748-23-0
- 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
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: complete and under GLP
- Qualifier:
- according to guideline
- Guideline:
- other: Closed Bottle Test, OECD method 301 and EU test method C.6.
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 28 d
- Reference substance:
- other: sodium acetate
- Parameter:
- % degradation (O2 consumption)
- Value:
- 3
- Sampling time:
- 28 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 65
- Sampling time:
- 140 d
- Details on results:
- Points of degradation plot (test substance):
0 % degradation after 7 d
0 % degradation after 14 d
3 % degradation after 28 d
13 % degradation after 56 d
39 % degradation after 84 d
59 % degradation after 120 d
65 % degradation after 140 d - Results with reference substance:
- Points of degradation plot (reference substance):
59 % degradation after 7 d
75 % degradation after 14 d - Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily but inherently biodegradable
- Conclusions:
- Under the conditions of the test, methylethylketone peroxide trimer is not readily biodegradable, but is inherently biodegradable from the results of the extended biodegradation test.
Reference
Description of key information
The result of an OECD 301D tests indicate that 3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane is not readily biodegradable.
An OECD 302B study did not show biodegradation either.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
Two tests on ready biodegradability are available. An OECD 301B (CO2 evolution test) performed in 1997 (result: not biodegradable). The OECD 301D (O2 consumption) test. The test was extended to 140 days because the pass level of 60% was not reached in 28 days. At day 140 a degradation percentage of 65% was reached. It is concluded that although the substance is not readily biodegradable, this results demonstrates that the substance is not recalcitrant in nature. A biodegradation percentage > 60% indicates that the test substance is completely mineralised.
No biodegradation was found in the OECD 302B study. MEK was not formed in the tests with 3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane
spiked to mineral salt medium or spiked to mineral salt medium with heat killed activated sludge. This demonstrates that in the Zahn Wellens test the peroxide bonds in this substance are not reduced by a chemical reaction. MEK was however also not measured for
3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane
in the presence of living activated sludge. The substance is therefore not removed by alkyl hydroperoxide reductases. The active site of alkyl hydroperoxid reductase most likely cannot accommodate ketone peroxides such as
3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane.
Studies with a mixture of organic peroxide (CAS 1613243-54-1) with the registered substance as main constituent showed similar results. This mixture was not found readily biodegradable and neither inherently biodegradable.
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.
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