2-ethylhexyl 2-([1,1'-biphenyl]-4-ylcarbonyl)benzoate

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 Mar 2020 - 23 Apr 2020

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Version / remarks:

March 04, 2016

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

11 July 2006

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: isothermal thermogravimetry

Specific details on test material used for the study:

Physical Description: Colourless to pale yellow liquid (determined by Charles River Den Bosch)
Purity/Composition: 96.27%
Storage Conditions: At room temperature
Purity/Composition correction factor: No correction factor required
Test item handling: No specific handling conditions required
Chemical name: 2-Ethylhexyl 2-([1,1'-biphenyl]-4-ylcarbonyl)benzoate
CAS number: 75005-95-7
EC Number: 278-051-5
Molecular formula: C28H30O3
Molecular weight: 414.22

Test no.:

#1

Temp.:

25 °C

Vapour pressure:

0 Pa

A representative weight loss curve of the test item is shown in Figure 4. The results of the isothermal TGA analysis for the test item and the vapour pressure at 20°C and 25°C are given in Table 3 and Table 4.

The vapour pressure regression curve of the log PT of the test item as function of the reciprocal temperatures is shown in Figure 5. The equation of the curve was: log PT = -3864 x 1/T + 9.54 (r = 0.998, n = 8).

Table 3  Results of the Vapour pressure Isothermal TGA Analysis

Temperature	Weight loss	νT	log νT	log PT	PT
[°C]	[µg/min]	[g/cm^2/h]			[Pa]
150	1.55521	1.86 x 10^-4	-3.73	0.43	2.7
	1.47477	1.76 x 10^-4	-3.75	0.4	2.5
160	2.30851	2.76 x 10^-4	-3.56	0.62	4.2
	2.21259	2.64 x 10^-4	-3.58	0.6	4
170	3.46455	4.14 x 10^-4	-3.38	0.82	6.6
	3.38663	4.04 x 10^-4	-3.39	0.81	6.4
180	5.17642	6.18 x 10^-4	-3.21	1.01	1
	5.21556	6.30 x 10^-4	-3.2	1.02	1.1

Table 4       Vapour Pressure of the Test Item

Temperature	log PT	PT	PT
[°C]		[Pa]	[mm Hg]
20	-3.64	2.3 x 10^-4	1.7 x 10^-6
25	-3.42	3.8 x 10^-4	2.8 x 10^-6

Conclusions:

The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was 2.3 x 10^-4Pa at 20 °C and 3.8x10^-4 Pa at 25 °C

Executive summary:

In this guideline (OECD 104) study, conducted with GLP certification, the vapour pressure of the test item at 20°C (293K) and 25°C (298K) was 2.3 x 10^-4Pa at 20 °C and 3.8x10^-4 Pa at 25 °C

Description of key information

Study conducted to recognised testing guidelines with GLP certification.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

25 °C