trans-5-butyl-2-(3',3'',4'',5''-tetrafluoro-1,1':4',1''-terphenyl-4-yl)-1,3-dioxane

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2013-07-01

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

GLP compliance:

no

Type of method:

effusion method: Knudsen cell

Key result

Test no.:

#1

Temp.:

20 °C

Vapour pressure:

0 Pa

Key result

Test no.:

#2

Temp.:

25 °C

Vapour pressure:

0 Pa

Key result

Test no.:

#3

Temp.:

125 °C

Vapour pressure:

0 Pa

The vapour pressure was measured twice. The first measurement was performed in the temperature range of 115 °C to 140 °C.

  

Temperature / °C	Vapour pressure / hPa
115	2.2E-5
120	3.2E-5
125	3.8E-5
130	9.9E-5
135	1.5E-4
140	2.7E-4

 

 

Antoine parameters and extrapolated vapour pressures 

T / ° C	p / hPa	log (p/hPa) = A + B/(C+T[°C])
20	1.7E-11	A = 13.83698
25	4.54E-11	B = -7209.22
50	3.37E-9	C = 273.15

The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C

 

  

Conclusions:

The vapour pressure at 20, 25 and 50 °C was determined to be 1.76E-9, 4.54E-9 and 3.37E-7 Pa, respectively.

Executive summary:

A study was conducted according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at different temperatures (115 - 140 °C) using the effusion method (weight loss). The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The values for 20, 25 and 50 °C were calculated using the Antoine equation. The vapour pressure at 20, 25 and 50 °C was determined to be 1.76E-9, 4.54E-9 and 3.37E-7 Pa, respectively.

Description of key information

The vapour pressure at 20, 25 and 50 °C was determined to be 1.76E-9, 4.54E-9 and 3.37E-7 Pa, respectively.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

25 °C

Additional information

A study was conducted according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at different temperatures (115 - 140 °C) using the effusion method (weight loss). The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The values for 20, 25 and 50 °C were calculated using the Antoine equation.The vapour pressure at 20, 25 and 50 °C was determined to be 1.76E-9, 4.54E-9 and 3.37E-7 Pa, respectively.