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EC number: 285-332-6 | CAS number: 85068-73-1
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:
- 30 October 2019
- 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
- Temp.:
- 20 °C
- Vapour pressure:
- 0.037 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.082 Pa
- Conclusions:
- The vapour pressure of the test substance was determined to be 3.68e-2 Pa at 20ºC and 8.21e-2 Pa at 25 ºC.
- Executive summary:
The vapour pressure of the test substance was determined according to OECD 104/ EU Method A.4, under GLP conditions.The vapour pressure of the test item using the effusion method with Knudsen cell was determined to be 3.68e-2 Pa at 20ºC and 8.21e-2 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: 33.40ºC, 36.30ºC, 39.10ºC and 42.10ºC. The graphic is included below.
Table 1. Summary of vapour pressure determination results.
Test sample |
Vapour pressure at 20ºC |
Vapour pressure at 25ºC |
Et-NENA |
3.68e-2 Pa |
8.21e-2 Pa |
Description of key information
Key study: Method according to OECD 104/ EU Method A.4, GLP study. The vapour pressure of the test substance is 3.68e-2 Pa at 20ºC and 8.21e-2 Pa at 25 ºC (effusion method with Knudsen cell).
Key value for chemical safety assessment
- Vapour pressure:
- 0.037 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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