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EC number: 228-846-8 | CAS number: 6362-80-7
- 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
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:
- Start of study: 2 May 2005. End of study: 2 June 2005
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study performed according to guideline and GLP
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes
- Type of method:
- gas saturation method
- Temp.:
- 25 °C
- Vapour pressure:
- 0.063 Pa
- Conclusions:
- The vapor pressure of 2,4-diphenyl-4-methyl-1-pentene is 6.34 x 10^-2 Pa.
Reference
Vapor pressure measurement results:
Measurement temperature (°C) |
Flow rate (mL/min) |
Vapour pressure (Pa) |
|
Measured value |
Average |
||
40 |
20 |
2.91 x 10-1 |
2.93 x 10-1 |
30 |
2.94 x 10-1 |
||
40 |
2.94 x 10-1 |
||
50 |
20 |
7.27 x 10-1 |
7.31 x 10-1 |
30 |
7.34 x 10-1 |
||
40 |
7.34 x 10-1 |
||
60 |
20 |
1.73 x 100 |
1.72 x 100 |
30 |
1.74 x 100 |
||
40 |
1.71 x 100 |
Test results were comparable (repeat accuracy of 30% or less) regardless of measurement at different flow rates, and the carrier gas was thought to be saturated with the test substance.
Vapor Pressure at 25°C (Extrapolated Value) (Fig. 3).
Regression equation |
logP (Pa) = -4014.49 x 1/T + 12.2868 |
Vapor pressure (25°C) |
6.64 x 10-2Pa |
Blank test and others
In the results of the blank test, no peak was detected at the peak position of the test substance (Fig. 2-4). Test substance was not detected in the second trap (Fig. 2-4). Therefore, it was judged that the test substance was collected in the first trap under each condition.
Discussion:
Two peaks other than the test substance were detected in HPLC analysis (Peaks A and B in the order of elution). Since no peak was detected at the position of Peak A in HPLC analysis of the high concentration test substance solution (Reference 3), it was thought to be a conversionproduct produced during the test, but its structure is unknown. Peak B, however, was confirmed to a trace impurity in the obtained sample (Fig. 2-1 to 2-3, Reference 3). A supplemental test on the effects of this conversion product and impurity in the results of this test was conducted (Supplemental Test). When vapor pressure was measured at 25°C, no peak other than the test substance was detected on the HPLC chromatogram and the vapor pressure of the test substance was 6.34×10-2Pa, similar to the result of this test.
Although a conversion product and impurity were detected at the same time as the test substance under the conditions of this test of 40°C and above, they were thought to have little effect on the vapor pressure of the test substance. Therefore, the results of this test were adopted as the vapor of the test substance.
Supplemental test:
Test conditions:
(1) Test temperatures: 25°C
(2) Flow rates: 20, 30 and 40 mL/min
(3) Replicates: 1
(4) Collection solvent: Methanol 30 mL
(5) Carrier gas: High purity nitrogen gas
The test apparatus, preparation of the vapor saturation column and analysis of test solutions were the same as in this test.
Vapor pressure measurement results:
Measurement temperature (°C) |
Flow rate (mL/min) |
Vapor pressure (Pa) |
|
Measured value |
Average |
||
25 |
20 |
5.16 x 10-2 |
6.34 x 10-2 |
30 |
6.81 x 10-2 |
||
40 |
7.05 x 10-2 |
Description of key information
A study performed according to OECD Guideline 104 reported a vapour pressure of 6.34 x 10-2 Pa at 25°C
Key value for chemical safety assessment
- Vapour pressure:
- 0.063 Pa
- at the temperature of:
- 25 °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.
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