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EC number: 244-815-1 | CAS number: 22174-70-5
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:
- 2007
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The study follows an internal method that is in accordance with norm annex A.4 of the Directive 92/69/EEC.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- no
- Type of method:
- dynamic method
- Temp.:
- 20 °C
- Vapour pressure:
- 0.003 mBar
- Conclusions:
- Vapour pressure of 2-ethylhexylal was calculated as 0.00139 mBar (or 0.139 Pa) at 20°C and 0.02003 mBar (or 2.003 Pa) at 50°C.
- Executive summary:
Vapour pressure of 2-ethylhexylal was measured following an internal method that is in accordance with norm annex A.4 of the Directive 92/69/EEC. The method consist in the determination of a temperature-pressure curve in a pressure range of about 10 to 1000 hPa by the dynamic method. If 20 °C lies outside the temperature range belonging to this pressure range, the vapour pressure at 20 °C is calculated by extrapolation.
Vapour pressure of 2-ethylhexylal was calculated as 0.00139 mBar (or 0.139 Pa) at 20°C and 0.02003 mBar (or 2.003 Pa) at 50°C.
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2001
- Reliability:
- 2 (reliable with restrictions)
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D 323 - modified
- GLP compliance:
- no
- Type of method:
- other: Reid vapor pressure
- Temp.:
- 20 °C
- Vapour pressure:
- 1.59 kPa
- Conclusions:
- Reid vapour pressure of 2-ethylhexylal was measured as 1.59 kPa at 20°C according to ASTM D323-modified
- Executive summary:
Reid vapour pressure of 2-ethylhexylal was measured as 1.59 kPa at 20°C according to ASTM D323-modified
Referenceopen allclose all
The test included 11 values of temperature/pressure. Please see attached graph in the section « Attached background information ». In the range 120 to 150°C, three data points are available:
126°C / 3 mbar
136°C / 5 mbar
150°C / 10 mbar
Based on all these data a log p versus 1/T curve was established. Its equation is :
log P(T) = 9,634 + (-3660,304) / (T + 273)
Based on this curve, an estimate of the vapour pressure at 20°C is calculated to be 0.0025 mbar
Description of key information
Vapour pressure of 2-ethylhexylal was measued following an internal method that is in accordance with norm annex A.4 of the Directive 92/69/EEC. The method consist in the determination of a temperature-pressure curve in a pressure range of about 10 to 1000 hPa by the dynamic method. If 20 °C lies outside the temperature range belonging to this pressure range, the vapour pressure at 20 °C is calculated by extrapolation.
Vapour pressure of 2-ethylhexylal was calculated as 0.00139 mBar (or 0.139 Pa) at 20°C and 0.02003 mBar (or 2.003 Pa) at 50°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0.139 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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