Registration Dossier
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EC number: 208-021-9 | CAS number: 505-84-0
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:
- comparable to guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- no
- Type of method:
- dynamic method
- Temp.:
- 20 °C
- Vapour pressure:
- 5.624 Torr
- Conclusions:
- Vapour pressure of propylal was calculated as 5.624 Torr (0.749 kPa) at 20°C
- Executive summary:
Vapour pressure of propylal was measured by the dynamic method using an ebulliometer. The determination of the vapor pressure curve was done from 290.56 K to 408.90 K and 25 data points were collected. The vapour pressure at 20 °C was calculated using the equation of the vapor pressure curve.
Vapour pressure of propylal was calculated as 5.624 Torr (0.749 kPa) at 20°C.
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study without detailed documentation
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM D 323 - modified
- GLP compliance:
- no
- Type of method:
- other: Reid method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- ca. 0.8 kPa
- Conclusions:
- Vapor pressure of propylal has been measured as <0.02 bar at 20°C (ASTM D323 modified, REID method).
- Executive summary:
Vapor pressure of propylal has been measured as <0.02 bar at 20°C (ASTM D323 modified, REID method).
Referenceopen allclose all
The test included the measurement of vapor pressure at 25 temperatures (see table below).
Based on all these data a log p versus 1/T curve was established. Its equation is :
log (P/Torr) = 6.85462 – 1333.76/(T/°C + 198.485)
T / K | P / kPa |
290.56 | 0.62 |
292.74 | 0.72 |
294.24 | 0.80 |
296.73 | 0.94 |
299.44 | 1.12 |
302.30 | 1.32 |
305.19 | 1.56 |
307.94 | 1.83 |
311.57 | 2.23 |
315.41 | 2.80 |
317.73 | 3.17 |
322.89 | 4.01 |
328.14 | 5.19 |
334.05 | 6.84 |
340.32 | 9.13 |
348.03 | 12.65 |
355.05 | 16.65 |
363.06 | 22.58 |
370.23 | 29.16 |
379.39 | 39.96 |
390.07 | 56.03 |
398.13 | 71.70 |
398.13 | 72.09 |
402.58 | 81.68 |
408.90 | 98.20 |
Description of key information
Vapor pressure of propylal has been measured as <0.02 bar at 20°C (ASTM D323 modified, REID method).
Key value for chemical safety assessment
- Vapour pressure:
- 0.8 kPa
- at the temperature of:
- 20 °C
Additional information
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