trans-1-butyl-4-[trans-4-[(E)-prop-1-enyl]cyclohexyl]cyclohexane

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

April 12, 2018 - April 13, 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

GLP compliance:

no

Type of method:

effusion method: Knudsen cell

Test no.:

#1

Temp.:

20 °C

Vapour pressure:

0.002 Pa

Key result

Test no.:

#1

Temp.:

25 °C

Vapour pressure:

0.004 Pa

Test no.:

#1

Temp.:

50 °C

Vapour pressure:

0.076 Pa

The vapour pressure was measured in the temperature range of 20 °C to 100 °C (no measurements between 55 °C and 95 °C to exclude an influence from the melting point). Above 100 °C no further measurements were possible as the test item had completely evaporated at 100 °C. The measured vapour pressures at the corresponding temperatures are listed in Table 1. After the measurement a mass loss of approx. 100 % (w/w) was determined.

Table 1: Measured vapour pressures and corresponding temperatures

Temperature in °C	Vapour pressure in hPa
20	3E-5
30	6.6E-5
40	2.3E-4
50	7.7E-4
100	8.6E-2

Table 2: Antoine parameters and extrapolated vapour pressures

T/°C	p / hPa	log (p/hPa) = A +B/(C+T[°C])
20	2.2E-5	A = 11.87988
25	4.2E-5	B = -4846.90
50	7.6E-4	C= 273.15

Table 3: Final Results

T/°C	p / hPa	p / Pa
20	2.2E-5	2.2E-3
25	4.2E-5	4.2E-3
50	7.6E-4	7.6E-2

Conclusions:

The vapour pressure of the test item was determined to be 2.2E-3 Pa at 20 °C, 4.2E-3 Pa at 25 °C and 7.6E-2 Pa at 50 °C, 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 using the effusion method: vapour pressure balance. The vapour pressure was measured in the temperature range of 20 °C to 100 °C (no measurements between 55 °C and 95 °C to exclude an influence from the melting point). Above 100 °C no further measurements were possible as the test item had completely evaporated at 100 °C. Using the Antoine equation, the constants A, B and C were determined and the vapour pressure of the test item at 20, 25 and 50 °C was extrapolated from the experimental vapour pressure. The vapour pressure of the test item was determined to be 2.2E-3 Pa at 20 °C, 4.2E-3 Pa at 25 °C and 7.6E-2 Pa at 50 °C, respectively.

Description of key information

The vapour pressure of the test item was determined to be 2.2E-3 Pa at 20 °C, 4.2E-3 Pa at 25 °C and 7.6E-2 Pa at 50 °C, respectively.

Key value for chemical safety assessment

Vapour pressure:

0.004 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 using the effusion method: vapour pressure balance (reference 4.6 -1).The vapour pressure was measured in the temperature range of 20 °C to 100 °C (no measurements between 55 °C and 95 °C to exclude an influence from the melting point). Above 100 °C no further measurements were possible as the test item had completely evaporated at 100 °C. Using the Antoine equation, the constants A, B and C were determined and the vapour pressure of the test item at 20, 25 and 50 °C was extrapolated from the experimental vapour pressure. The vapour pressure of the test item was determined to be 2.2E-3 Pa at 20 °C, 4.2E-3 Pa at 25 °C and 7.6E-2 Pa at 50 °C, respectively.