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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:
26 September 2016 - 11 January 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
GLP compliant
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
23 March 2006
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
24 August 2009
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Version / remarks:
August 1996
Deviations:
no
GLP compliance:
yes
Type of method:
static method
Specific details on test material used for the study:
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL:
- At room temperature

OTHER SPECIFICS:
- Purity/composition correction factor: No correction factor required.
- Test item hanling: No specific handling conditions required, but for practical reason the test item could be kept on ice to avoid evaporation of the material before and between performance of physico-chemical tests.
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
92 000 Pa
Key result
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
110 000 Pa

The plot of the log PT of the test item as function of the reciprocal temperatures is shown in attached document.

The equation of the curve was: log PT,20 = -1441 x 1/T + 9.88 (r = 0.99996, n = 22). The vapour pressure of the test item at 20°C and at 25°C is given in the following Table and was calculated as the mean of the vapour pressures measured at these temperatures.

Vapour pressure of the test item

Temperature [°C] log PT  PT [Pa]  PT [mm Hg] 

20

4.96

9.2 x 104 6.9 x 102 
25 5.05  1.1 x 105  8.4 x 102 
Conclusions:
The vapour pressure of 1,1,1-trifluoroacetone measured with the static method was 6.9 x 10E2 mm Hg (9.2 x 10E4 Pa) at 20°C and 8.4 x 10E2 mm Hg (1.1 x 10E5 Pa) at 25°C.
Executive summary:

Measurement of the vapour pressure of 1,1,1 -trifluoroacetone was performed using a static method according to standardised guidelines (OECD TG 104, EU A.4 and OPPTS 830.7950) under GLP conditions.

The vapour pressure of 1,1,1-trifluoroacetone measured with the static method was 6.9 x 10E2 mm Hg (9.2 x 10E4 Pa, i.e. 920 hPa) at 20°C and 8.4 x 10E2 mm Hg (1.1 x 10E5 Pa, i.e. 1100 hPa) at 25°C.

Description of key information

Measurement of the vapour pressure of 1,1,1 -trifluoroacetone was performed using a static method according to standardised guidelines (OECD TG 104, EU A.4 and OPPTS 830.7950) under GLP conditions.

Key value for chemical safety assessment

Vapour pressure:
110 000 Pa
at the temperature of:
25 °C

Additional information