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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20 February 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: Knudsen cell
Test material information:
Composition 1
Key result
Temp.:
20 °C
Vapour pressure:
214.88 Pa
Key result
Temp.:
25 °C
Vapour pressure:
306.63 Pa

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: 24.40ºC, 27.00ºC, 29.40ºC and 31.80ºC.

Table 1. Summary of vapour pressure determination results.

Vapour pressure at 20ºC

Vapour pressure at 25ºC

214.88Pa

306.63Pa

 

Conclusions:
The vapour pressure of the test substance was determined to be 214.88 Pa at 20ºC and 306.63 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 214.88 Pa at 20ºC and 306.63 Pa at 25 ºC.

Description of key information

Key study. Method according to OECD 104/ EU Method A.4, GLP study. The vapour pressure of the test item at 20ºC is 214.88 Pa, and the vapour pressure of the test item at 25ºC is 306.63 Pa.

Key value for chemical safety assessment

Vapour pressure:
214.88 Pa
at the temperature of:
20 °C

Additional information

Key study: The vapour pressure of the test substance was determined according to OECD 104/ EU Method A.4, under GLP conditions. The vapour pressure of test substance using the effusion method with Knudsen cell was determined to be 214.88 Pa at 20ºC and 306.63 Pa at 25 ºC.