3-((bis(diisopropylamino)phosphanyl)oxy)propanenitrile

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-03-06 to 2018-04-17

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

GLP compliance:

no

Type of method:

effusion method: Knudsen cell

Temp.:

20 °C

Vapour pressure:

0.053 Pa

Temp.:

25 °C

Vapour pressure:

0.065 Pa

Temp.:

50 °C

Vapour pressure:

0.17 Pa

The vapour pressure was measured in the temperature range of 10 °C to 30 °C. The temperature range was chosen due to preliminary information about the test item. The measured vapour pressures at the corresponding temperatures are shown in Table 1. The amount of test item was determined before (3.2201 g) and after (3.0972 g) the vapour pressure measurement. After measurement a mass loss of aprrox. 4% (w/w) was determined.

 Table 1: Measured vapour pressures and corresponding temperatures

Temperature / °C	Vapour pressure / hPA
10	4.6 x 10E-4
15	4.3 x 10E-4
20	5.1 x 10E-4
25	6.4 x 10E-4
30	8.2 x 10E-4

 

The data point measured at 10 °C was not included in the linear regression because it shows a typical deviation caused by volatile impurities at the beginning of a measurement. The vapour pressure values for 20, 25, 50 °C were interpolated (values at 20 °C and 25 °C) and extrapolated (value at 50 °C) using Antoine constants.

Conclusions:

The vapour pressure of the test item was determined according to OECD guideline 104 by effusion method using a vapour pressure balance. The vapour pressure values for 20, 25, 50 °C were interpolated (values at 20 °C and 25 °C) and extrapolated (value at 50 °C) using Antoine constants:
20 °C: 0.053 Pa;
25 °C: 0.065 Pa;
50 °C: 0.17 Pa.

Executive summary:

The vapour pressure of the test item was determined according to OECD guideline 104 by effusion method using a vapour pressure balance. The vapour pressure values for 20, 25, 50 °C were interpolated (values at 20 °C and 25 °C) and extrapolated (value at 50 °C) using Antoine constants:

20 °C: 0.053 Pa;

25 °C: 0.065 Pa;

50 °C: 0.17 Pa.

Description of key information

The vapour pressure of the test item was determined according to OECD guideline 104 by effusion method using a vapour pressure balance. The vapour pressure values for 20, 25, 50 °C were interpolated (values at 20 °C and 25 °C) and extrapolated (value at 50 °C) using Antoine constants:

20 °C: 0.053 Pa;

25 °C: 0.065 Pa;

50 °C: 0.17 Pa.