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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 2018-12-03 to 2018-12-11
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
adopted 23rd March 2006
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
August 24, 2009
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: Knudsen cell
Key result
Temp.:
20 °C
Vapour pressure:
419.79 Pa
Key result
Temp.:
25 °C
Vapour pressure:
520.37 Pa

Regression data of the vapour pressure curve:

Intercept 8.1851

Slope -1630.5082

R. Squared 0.9880

The vapour pressure of the test item 2,5-Dimethoxytetrahydrofuran was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C.

Conclusions:
The following result was obtained:
Vapour pressure of 2,5-Dimethoxytetrahydrofuran at 20 °C: 419.79 Pa
Vapour pressure of 2,5-Dimethoxytetrahydrofuran at 25 °C: 520.37 Pa
Executive summary:

Vapour pressure of the test substance was determined using Vapor Pressure Analyzer (Knudsen Effusion Method). Determinations were performed according to OECD 109 and A4 EU method and following GLP.

The following result was obtained:

at 20 °C: 419.79 Pa

at 25 °C: 520.37 Pa

Description of key information

Key value for chemical safety assessment

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

Additional information

520.37 Pa at 25 °C