Trichloro(N,N-dimethyloctylamine)boron

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Testing was conducted between the 8th August and 12th August 2014.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP 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:

yes (incl. QA statement)

Type of method:

effusion method: vapour pressure balance

Temp.:

25 °C

Vapour pressure:

0.021 Pa

Summary of Results:

The values of vapor pressure at 25 °C extrapolated from each graph are summarized in the following table:

 

Table 3.6 – Summary of Vapor Pressure Data

 

Run	Log10 [Vp(25 ºC)]
6	-1.64
7	-1.68
8	-1.68
9	-1.67
10	-1.72
Mean	-1.68
Vapor Pressure	2.09 x 10^-2Pa

 

The test item did not change in appearance under the conditions used in the determination.

 

Discussion:

A total of 10 runs were completed for the main sequence. Equilibrium with regard to vapor pressure was assessed to have been reached over the final five runs. Thus the final five runs have been used to calculate the definitive vapor pressure value for the test item.

The vapor pressure of the test item has been determined to be 2.1 x 10^-2Pa at 25 ºC.

Conclusions:

Under study conditions, the vapor pressure of the test substance was determined to be 2.1 x 10E-2 Pa at 25 ºC.

Executive summary:

A study was conducted to determine the vapour pressure of the test substance, trichloro(N,N-dimethyloctylamine)boron using effusion method according to OECD Guideline 104 and EU Method A.4 in compliance with GLP. The vapor pressure was determined using a vapor pressure balance. The temperature of the sample was controlled electronically. The mass and temperature readings were recorded automatically into a computer file. The difference in mass readings with the orifice covered and uncovered is proportional to the vapor pressure at the given oven temperature. A sequence of runs was started after a sample of test item had been under vacuum for approximately 42 hours. Temperature and pressure readings were taken between 10 and 20 ºC with a one-hour dwell at 10 ºC between runs. Under study conditions, the vapor pressure of the test substance was determined to be 2.1 x 10E-2 Pa at 25 ºC (Harlan, 2014).

Description of key information

The vapour pressure was determined using effusion method according to OECD Guideline 104 and EU Method A.4 (Harlan, 2014).

Key value for chemical safety assessment

Vapour pressure:

0.021 Pa

at the temperature of:

25 °C