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Diss Factsheets
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EC number: 476-890-3 | CAS number: -
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- end on 11 August 2005
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The calculation followed the procedures indicated by EU and OECD guidelines.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- (only calculation)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- other: vapour pressure calculated from the boiling point of the test item
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: 0.00001 Pa or lower
- Conclusions:
- The vapour pressure of iron oxide isostearate is estimated to be < 1 x 10-5 Pa at 25°C.
- Executive summary:
As the vapour pressure of the test item is expected to be so small that the value is below the measurement range of an experimental determination, the vapour pressure was calculated according to the procedures indicated by EU and OECD guidelines, and the method calculated the vapour pressure from the boiling point of the test item.
The vapour pressure of iron oxide isostearate is estimated to be < 1 x 10-5 Pa at 25°C.
Reference
The boiling point of stearic acid was calculated to be approximately 356°C using Meissner’s method. Thus the boiling point of iron oxide isostearate must be above 356°C (which was confirmed experimentally. See section 4.3: boiling point > 400°C).
The vapour pressure of isostearic acid was estimated to be 1.25 x 10E-5 Pa at 25°C based on the boiling point calculated and using the Modified Watson correlation.
It is important to note, that the vapour pressure was calculated for the free isostearic acid of the test item. Using the Meissner’s method for the calculation of the boiling point, it is not possible to take into account that the binding of isostearic acid to iron oxide is rather more of covalent nature. The calculation should be regarded as a rough estimation and the real vapour pressure of iron oxide isostearate is expected to be at least several powers to 10 lower than the calculated values.
In conclusion, the vapour pressure of iron oxide isostearate is estimated to be <1x10E-5 Pa at 25°C, and therefore being outside of the experimentally measurable range.
Description of key information
The vapour pressure of iron oxide isostearate is estimated to be < 1 x 10E-5 Pa at 25°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
As the vapour pressure of the test item is expected to be so small that the value is below the measurement range of an experimental determination, the vapour pressure was calculated according to the procedures indicated by EU and OECD guidelines. The resulting report was scored as Klimish 2 and selected as a key study; giving a vapour pressure below 1x10-5 Pa at 25°C.
This value is supported by the experimental data on cerium oxide isostearate which vapour pressure is 2 x 10-6 Pa at 25°C (see the read-across document attached to IUCLID section 13).
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