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Diss Factsheets
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EC number: 239-741-1 | CAS number: 15667-10-4
- 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
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The half-life for 1,1-di(tert-amylperoxy)cyclohexane at 25°C has been determined to be 1.43 hour at pH 4, 5.36 hours at pH 7 and 6.41 hours at pH 9. At pH 1.2 and 37°C, the half-life is < 10 min.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 5.36 h
- at the temperature of:
- 25 °C
Additional information
The rate of hydrolysis of 1,1-di(tert-amylperoxy)cyclohexane (tested in presence of isododecane) as a function of pH has been studied according to the OECD 111 Guideline and GLP requirements (Chastenet, 2017).
The hydrolysis of the test item was assessed in aqueous buffers at pH 1.2, 4, 7 and 9 at 50 ± 0.5°C. The mean loss of test item, compared to T0, was determined to have changed by more than 10% after 5 days for all tested pH. This indicated that the test item was clearly hydrolytically unstable at all these pH and that significant hydrolysis had occurred.
Therefore, the definitive test was conducted at pH 1.2, 4, 7 and 9. Here are the results of half-life for each pH:
- the half life of the test item at pH 1.2 and 37°C was determined to be < 10 min;
- the half life of the test item at pH 4.0 and 25°C was determined to be 1.43 hours;
- the half life of the test item at pH 7.0 and 25°C was determined to be 5.36 hours;
- the half life of the test item at pH 9.0 and 25°C was determined to be 6.41 hours.
The concentration of hypothetical hydrolysis products is too low to allow their detection. The OECD 111 criteria on mass balance for cold material (70%-110% accepted range) could thus not be determined.
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