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EC number: 236-793-7 | CAS number: 13483-58-4
Vapour pressure
Administrative data
Link to relevant study record(s)
- 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
- 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.
Reference
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 |
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 |
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.
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