1,3-Cyclohexanedimethanamine, N1,N3-bis(2-methylpropylidene)-

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2011-01-28 to 2011-05-06

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:

2009-08-24

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

2006-05-23

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

Version / remarks:

August 1996

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

static method

Key result

Temp.:

20 °C

Vapour pressure:

47 Pa

Temp.:

25 °C

Vapour pressure:

63 Pa

Measurement Values Determination of Vapour Pressure

1. Determination increasing temperature		2. Determination decreasing temperature
Temp. in °C	Pressure in mbar = hPa	Temp. in °C	Pressure in mbar= hPa
15.4	0.3	56.5	3.5
19.5	0.4	46.1	2.6
24.3	0.6	37.1	1.8
29.4	0.8	28.3	1.2
34.6	1.0	22.6	0.7
39.9	1.4	16.2	0.6
47.3	1.9	-	-
56.3	2.8	-	-
59.3	3.5	-	-
67.7	4.3	-	-

Evaluation of Measured Values

From the measured values for the increasing and for the decreasing temperature, log P (in log Pa) and 1/T (in 1/K) were calculated. The measured and the calculated values were plotted (p against T and log P against 1/T).

The regression curve with slope B, intercept A and correlation r was calculated (graph log P vs. 1/T). From the values of these parameters, vapour pressures at 20.0 and at 25.0 °C were calculated.

Conclusions:

Using the static method, vapour pressures of 47 Pa at 20 °C and 63 Pa at 25 °C were determined.

Executive summary:

The determination of the vapour pressure of Incorez 397 was performed according to OECD Guideline 104 / EU Method A.4 / EPA OPPTS 830.7950. Using the static method, vapour pressures of 47 Pa at 20 °C and 63 Pa at 25 °C were determined.

These values were calculated from the regression of 16 individual measurements, which were performed in a temperature range of 15.4 – 67.7 °C. The measured values for pressure P and temperature T were used to calculate pairs of log P and 1/T. These values were plotted, from the linear regression, vapour pressures at ambient temperature were determined.

Description of key information

Vapour pressures of 47 Pa at 20 °C and 63 Pa at 25 °C were determined for Incorez 397.

Key value for chemical safety assessment

Vapour pressure:

47 Pa

at the temperature of:

20 °C

Additional information

The determination of the vapour pressure of Incorez 397 was performed according to OECD Guideline 104 / EU Method A.4 / EPA OPPTS 830.7950. Using the static method, vapour pressures of 47 Pa at 20 °C and 63 Pa at 25 °C were determined.

These values were calculated from the regression of 16 individual measurements, which were performed in a temperature range of 15.4 – 67.7 °C. The measured values for pressure P and temperature T were used to calculate pairs of log P and 1/T. These values were plotted, from the linear regression, vapour pressures at ambient temperature were determined.