N,N'-[(methylimino)bis(trimethylene)]bis(stearamide)

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-06-14 to 2017-07-06

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

2006-03-23

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Version / remarks:

2008-05-30

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: vapour pressure balance

Key result

Temp.:

20 °C

Vapour pressure:

0 Pa

Remarks on result:

other: calculated by extrapolation of the measured vapour pressure curve

Key result

Temp.:

25 °C

Vapour pressure:

0 Pa

Remarks on result:

other: calculated by extrapolation of the measured vapour pressure curve

Key result

Temp.:

50 °C

Vapour pressure:

0 Pa

Remarks on result:

other: calculated by extrapolation of the measured vapour pressure curve

THERMAL STABILITY

During the assessment of thermal stability with DSC, in the temperature range of 70 - 80 °C a small exothermic effect directly followed by an endothermic effect in the temperature range of 80 - 95 °C was observed. A small and broad exothermic effect in the temperature range of 190 - 230 °C could by observed. No further thermal effects were observed up to the test end temperature of 300 °C.

Results of the DSC-measurement:

No.	Sample weight / mg	Start / °C	Energy / J/g	Remark
PN13590	6.37	70 (exothermic) 80 (endothermic) 190 (exothermic)	-10 +90 -20	Figure 1

 

VAPOUR PRESSURE

The vapour pressure was measured in the temperature range of 128 °C to 173 °C.

Results of the effusion method (vapour pressure balance):

No.	Temperature / °C	Vapour pressure / Pa
1	128	1.92 × 10^-2
2	133	2.82 × 10^-2
3	143	5.51 × 10^-2
4	153	9.80 × 10^-2
5	163	1.67 × 10^-1
6	168	2.25 × 10^-1
7	173	2.69 × 10^-1

Conclusions:

The vapour pressure of the test item N,N′-[(methylimino)bis-(trimethlene)]bis-(stearamide) was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C.
At 20 °C, the vapour pressure is 1.3E-6 Pa.
At 25 °C, the vapour pressure is 2.3E-6 Pa.
At 50 °C, the vapour pressure is 3.6E-5 Pa.

Executive summary:

The vapour pressure of the test item N,N′-[(methylimino)bis-(trimethlene)]bis-(stearamide) was determined by the "effusion method: vapour pressure balance" according to OECD Guideline 104 (23 March 2006) and according to the test method A.4."Vapour Pressure" as described in the Council Regulation (EC) No 440/2008 of 30 May 2008.

Before performing the test to determine the vapour pressure, the thermal stability of the test item was assessed with a DSC-measurement up to a temperature of 300 °C. In the temperature range of 70 - 80°C a small exothermic effect directly followed by an endothermic effect in the temperature range of 80 - 95 °C was observed. A small and broad exothermic effect in the temperature range of 190 - 230 °C could be observed. No further thermal effects were observed up to the test end temperature of 300 °C.

Following the assessment of thermal stability, seven measurements of the vapour pressure were performed in the temperature range of 128 °C to 173°C.

The vapour pressure of the test item N,N′-[(methylimino)bis-(trimethlene)]bis-(stearamide) was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C.

At 20 °C, the vapour pressure is 1.3E-6 Pa.

At 25 °C, the vapour pressure is 2.3E-6 Pa.

At 50 °C, the vapour pressure is 3.6E-5 Pa.

Description of key information

The vapour pressure of the test item N,N′-[(methylimino)bis-(trimethlene)]bis-(stearamide) was determined by the "effusion method: vapour pressure balance" according to OECD Guideline 104 (23 March 2006) and according to the test method A.4."Vapour Pressure" as described in the Council Regulation (EC) No 440/2008 of 30 May 2008.

 

The vapour pressure of the test item N,N′-[(methylimino)bis-(trimethlene)]bis-(stearamide) was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C.

At 20 °C, the vapour pressure is 1.3 x 10-6Pa.

At 25 °C, the vapour pressure is 2.3 x 10-6Pa.

At 50 °C, the vapour pressure is 3.6 x 10 -5Pa.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

20 °C

Additional information

Before performing the test to determine the vapour pressure, the thermal stability of the test item was assessed with a DSC-measurement up to a temperature of 300 °C. In the temperature range of 70 - 80°C a small exothermic effect directly followed by an endothermic effect in the temperature range of 80 - 95 °C was observed. A small and broad exothermic effect in the temperature range of 190 - 230 °C could by observed. No further thermal effects were observed up to the test end temperature of 300 °C.

 

Following the assessment of thermal stability, seven measurements of the vapour pressure were performed in the temperature range of 128 °C to 173°C.

The vapour pressure of the test item N,N′-[(methylimino)bis-(trimethlene)]bis-(stearamide) was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C.

At 20 °C, the vapour pressure is 1.3 x 10-6Pa.

At 25 °C, the vapour pressure is 2.3 x 10-6Pa.

At 50 °C, the vapour pressure is 3.6 x 10 -5Pa.