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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:
11-18 July 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes
Type of method:
static method
Key result
Test no.:
#1
Temp.:
ca. 20 °C
Vapour pressure:
ca. 530 Pa

1.2 g of sample was used. Sample degassed for approximately 27 hours. Sample has volatile components with variable boiling points. As a result erratic data points obtained from trial runs with a high vapour pressure observed around 20°C. The sample was therefore held at a set temperature of 20°C. The pressure of the sample was monitored at the set temperature for approximately 4 hours to obtain the vapour pressure at 20°C.

Conclusions:
A vapour pressure of 530 Pa at 20C was determined by the Static method.
Executive summary:

The Static method was used to measure the vapour pressure of the substance. The sample was identified to have volatile components with variable boiling points, so trial runs resulted in erratic data points. A high vapour pressure was observed at 20 C, so the sample was maintained at that temperature. The vapour pressure was determined to be 530 Pa at 20C.

Description of key information

The Static method was used to measure the vapour pressure of the substance. The sample was identified to have volatile components with variable boiling points, so trial runs resulted in erratic data points. A high vapour pressure was observed at 20 C, so the sample was maintained at that temperature. The vapour pressure was determined to be 530 Pa at 20C.

Key value for chemical safety assessment

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

Additional information