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EC number: 606-948-7 | CAS number: 2217-02-9
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:
- May 29, 2017
- 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
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: Knudsen cell
- Key result
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 24.92 Pa
- Key result
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 44.99 Pa
- Conclusions:
- The vapour pressure of D-alpha fenchol was determined to be 24.92 Pa at 20ºC and 44.99 Pa at 25 ºC.
- Executive summary:
The vapour pressure of the test item was determined according to OECD 104/ EU Method A.4, under GLP conditions.The vapour pressure of D-alpha fenchol using the effusion method with Knudsen cell was determined to be 24.92 Pa at 20ºC and 44.99 Pa at 25 ºC.
Reference
Vapour pressure of the test item at 20ºC and 25ºC was calculated on the basis of equation log (p) = f (1/ t) = a-b/(t+273.15) where: p – vapour pressure in Pa, t – temperature in ºC, obtained for four measurement points: 25.2ºC, 27.6ºC, 30.2ºC and 32.9ºC.
Table 1. Summary of vapour pressure determination results.
Vapour pressure at 20ºC |
Vapour pressure at 25ºC |
24.92 Pa |
44.99 Pa |
Description of key information
Key study. Test method according to OECD 104/ EU Method A.4, GLP
study. The vapour pressure of the test item is 24.92 Pa at 20ºC
and 44.99 Pa at 25 ºC.
Key value for chemical safety assessment
- Vapour pressure:
- 24.92 Pa
- at the temperature of:
- 20 °C
Additional information
Key study: The study of vapour pressure using effusion method was performed in accordance with EU Method A.4 (based on the method OECD 104). The vapour pressure of D-alpha fenchol was determined to be 24.92 Pa at 20ºC and 44.99 at 25 ºC.
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