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Diss Factsheets
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EC number: 235-527-7 | CAS number: 12262-58-7
- 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:
- 1989
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: A well performed guideline study but certificate of analyses is not attached to the report.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- yes
- Remarks:
- instead of an effluent/extract/mixture activated sludge was used as inoculum. Ammonium chloride was omitted from the medium to prevent nitrification.
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, predominantly domestic, non-adapted
- Details on inoculum:
- Secondary activated sludge was obtained from the RZWI Nieuwgraaf in Duiven 1st of September 1989. This is an activated sludge plant treating predominantly domestic wastewater.
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 2 mg/L
- Based on:
- act. ingr.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Reference substance:
- acetic acid, sodium salt
- Remarks:
- .
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 92
- Sampling time:
- 28 d
- Results with reference substance:
- The percentage biodegradation of the reference compound was 87% in day 28.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The test substance is readily biodegradble.
- Executive summary:
This closed bottle (OECD 301D) guideline study performed in 1989, shows that cyclohexanone peroxide is readily biodegrable, passing the 10 -day window. The minor deviation mentioned in the material and method part of the RSS, is not considered to effect the result.
Reference
Percentage biodegradation of the test substance and sodium acetate in the closed bottle test
Time (days) | 5 | 15 | 28 |
Test substance (% BOD/ThOD) | 69 | 85 | 92 |
Sodium acetate (% BOD/ThOD) | 73 | 83 | 87 |
The data in the table shows that the substance should be classified as readily biodegradable based on the final biodegradation at day 28 (92%) The biodegradation in day 5 (69%) shows that the substance passes the 10-day window.
Description of key information
The test substance is classified as readily biodegradable based on data from an OECD 301 D test.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
One guideline study on biodegradation in water is availble for cyclohexanone peroxide. The study was conducted in 1989, in accordance with OECD 301D, and the result is expressed as the oxygen consumption (BOD/ThOD). The study showed that the biodegradation of cyclohexanone peroxide was 92% in day 28. Therefore, cyclohexane peroxide is classified as readily biodegradble.
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