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EC number: 485-320-2 | CAS number: 221667-31-8
- 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Landwirtschaft und Forsten, Wiesbaden, Germany
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 20 °C
- Vapour pressure:
- < 0 Pa
- Remarks on result:
- other: estimated value according to the Antoine equation
- Vapour pressure:
- < 0 hPa
- Remarks on result:
- other: The vapour pressure values were calculated as conservative estimates, based on a lack of any detectable vapour pressure of the test item at 150.1 °C, and the detection limit of the method, i.e. 10e-5 hPa.
Reference
The vapour pressure was measured in the temperature range of 50 to 150 °C.
No vapour pressure of the test item was observed in the entire range, meaning that the vapour pressure in the whole range was below the lower detection limit of 10-5hPa. The vapour pressure was measured at the following temperatures: 50.1, 58.1, 63.5, 70.7, 77.6, 84.4, 91.5, 99.8, 100.1, 111.3,119.5, 128.6, 133.6, 140.0 and 150.1 °C. For every temperature the vapour pressure of the test item was <10-5hPa.
Estimation of the vapour pressure for the test item at 20, 25 and 50 °C
According to the Antoine equation, the vapour pressure can be calculated according to:
Log p = A + B/(273.15 +T)
[p in hPa and T in °C]
Values for the slope of the Antoine equation (constant B) for comparable substances, which can be found in the literature (e.g. Handbook of Chemistry and Physics) are normally lower than - 5000.
Thus, for a conservative estimation of the vapour pressure of the test item at 20, 25 and 50 °C, a slope (constant B) of - 5000 was used.
The last data point of the measurement at 150.1 °C was used as the starting point for the calculation.
The measured vapour pressure at 150.1 °C was below 10-5hPa. For a conservative estimation, it was assumed that the vapour pressure at 150.1 °C corresponds to the lower detection limit of the vapour pressure balance, i.e. 10-5hPa.
Based on this assumption, the constant A of the Antoine equation was calculated according to
A = log p - [B / (273.15 + T)] = log10-5- [- 5000 / (273.15 + 150.1)] = 6.8133
Subsequently, the vapour pressure at 20, 25 and 50 °C can be calculated with the Antoine equation as follows:
Log p = 6.81 - 5000 / (273.15 +T) p in hPa and T in °C
T [°C] |
p [hPa] |
p [Pa] |
20 |
5.72E-11 |
5.72E-9 |
25 |
1.10E-10 |
1.10E-8 |
50 |
2.19E-9 |
2.19E-7 |
This is a conservative estimation of the vapour pressure of the test item for the listed temperatures.
Since the true vapour pressure is most likely to be even much lower than this value derived from the detection limit, it may safely be assumed that the vapour pressure at the above listed temperatures is far below 10 -7hPa
T [°C] |
p [hPa] |
p [Pa] |
20 |
<< 1.0E-7 |
<< 1.0E-5 |
25 |
<< 1.0E-7 |
<< 1.0E-5 |
50 |
<< 1.0E-7 |
<< 1.0E-5 |
Description of key information
< 0.00001 Pa at 20 °C
(OECD 104, effusion method: vapour pressure balance)
Key value for chemical safety assessment
- Vapour pressure:
- 0 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.
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