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EC number: 224-167-6 | CAS number: 4221-98-1
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:
- 2016-05-13 to 2016-07-01
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2008
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- 1996
- GLP compliance:
- no
- Type of method:
- dynamic method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 2.35 hPa
- Temp.:
- 25 °C
- Vapour pressure:
- 3.18 hPa
- Temp.:
- 50 °C
- Vapour pressure:
- 12.53 hPa
- Conclusions:
- The vapour pressure was determined to be 2.35 hPa (20 °C), 3.18 hPa (25°C), 12.53 hPa (50°C).
- Executive summary:
The vapour pressure of the test was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure.
The vapour pressure was measured in the temperature range of 51.1 to 116.6 °C.
The vapour pressure was determined to be 2.35 hPa (20 °C), 3.18 hPa (25°C), 12.53 hPa (50°C) using the dynamic method vapour-liquid equilibrium (VLE).
Reference
From the measured data points of the vapour pressure curve the constants A, B and C of the Antoine equation
log10 p= A+(B/(C+T) )
p = vapour pressure in Pa
T = temperature in °C
can be derived by regression (Microsoft Excel) of the data points to
A = 10.1936
B = -2292.94
C = 273.15
Description of key information
The vapour pressure was determined to be 2.35 hPa (20 °C), 3.18 hPa (25°C), 12.53 hPa (50°C).
Key value for chemical safety assessment
- Vapour pressure:
- 2.35 hPa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of the test was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure. The vapour pressure was determined to be 2.35 hPa (20 °C), 3.18 hPa (25°C), 12.53 hPa (50°C).
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.
