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Diss Factsheets
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EC number: 212-094-2 | CAS number: 762-16-3
- 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
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Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- April to June 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM E1782-08
- Deviations:
- no
- Principles of method if other than guideline:
- Thermal analysis.
This test method is neither included into EC Regulation 761/2009, Guideline A.4 Vapour
Pressure [8.5], nor into OECD Guideline 104 Vapour pressure [8.6]. Nevertheless, this method
was taken because for substances which are thermally unstable and contain impurities it is a
more suitable method than the other listed in the above-mentioned guidelines. It is expected that
this method will be included into EC Guideline A.4 in the near future. - GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001
- Type of method:
- other: Thermal analysis
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 0.1 Pa
- Remarks on result:
- other: extrapolated using Antoine equation derived from higher temperature data
- Conclusions:
- The vapour pressure of the test substance was determined according to EC Regulation [8.5] and according to the OECD Guideline [8.6].
The vapour pressure of dioctanoyl peroxide is below 0.1 Pa or below 0.001 mBar at 20°C. - Executive summary:
The vapour pressure of the test substance was determined according to EC Regulation [8.5] and according to the OECD Guideline [8.6].
The vapour pressure of dioctanoyl peroxide is below 0.1 Pa or below 0.001 mBar at 20°C.
Reference
The first DSC test at reduced pressure was performed at 5 mBar; no endothermic effect was
observed till 70°C. This pressure is around the lower pressure borderline of the DSC investigations.
Observations:
- no endothermic effect due to evaporation till a sample temperature of 80°C
- exothermic decomposition effect observed in this high rate scan at 70°C
- a decomposition gas / liquid flow was obtained, that result in a mass loss of around 25%
- part of the escaped sample was on the DSC sensor as a liquid.
Based on this observation one can conclude that the vapor pressure of the test sample is
below 0.285 mBar or below 0.0285 kPa at 80°C.
Note: The temperature of 80°C is very high for the test substance. Handling at this
conditions is only possible for very small samples in a DSC scan with a relative high
heating rate; 5°C/min. in this test.
Additional calculations and comparisons are performed to make a better estimation of the
vapor pressure of the test substance at room temperature.
So, the vapor pressure of two anhydrides is compared with the vapor pressure of the
corresponding peroxides. This is done for:
- Tx 187-pure = isobutyric peranhydride and isobutyric anhydride and
- Laurox = lauroyl peranhydride and lauroyl anhydride.
Based on the comparison we conclude that the vapor pressure of the test substance is
around 5*10-5 mBar.
In other words, the vapour pressure is below the REACH borderline for occupational safety
of 0.0001 kPa or below 0.001 mBar at 20°C.
Description of key information
The vapour pressure of the test substance was determined according to EC Regulation [8.5] and according to the OECD Guideline [8.6].
The vapour pressure of dioctanoyl peroxide is below 0.1 Pa or below 0.001 mBar at 20°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0.1 Pa
- at the temperature of:
- 20 °C
Additional information
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.
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