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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:
2003-04-01 - 2003-04-04
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
yes
Type of method:
static method
Specific details on test material used for the study:
- Batch: 8191-34
- Purity: 97.8% (expressed as primary amine, % of total)
Key result
Temp.:
38.19 °C
Vapour pressure:
21.84 Pa
Remarks on result:
other: First vapour pressure
Key result
Temp.:
32.74 °C
Vapour pressure:
12.95 Pa
Remarks on result:
other: Second vapour pressure
Key result
Temp.:
24.39 °C
Vapour pressure:
5.44 Pa
Remarks on result:
other: Third vapour pressure

Based on the vapour pressures measured, a vapour pressure curve was constructed (lnP vs 1/T; p in Pa and T in Kelvin). The vapour pressure at 20°C was extrapolated from the vapour pressure curve to be 3.4 +/- 0.1 Pa.

Conclusions:
The vapour pressure of the substance was extrapolated from the vapour pressure curve to be 3.4 +/- 0.1 Pa at 20 °C.

Description of key information

The vapour pressure of the substance was determined in a GLP study according to test methods EC A.4 and OECD 104 to be 3.4 Pa at 20 °C, following the static technique (Van der Baan-Treur, 2003).

Key value for chemical safety assessment

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

Additional information

Recommended measurement range for the static technique is 10 to 10E5 Pa. In the current study, a capacitance manometer with a measuring range of 6x10E-3 to 2x10E5 Pa was applied extending the recommended measurement range to a lower limit of at least 10E-1 Pa as indicated in the test guideline.