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EC number: 224-631-8 | CAS number: 4431-83-8
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The vapor pressures were measured by means of a dynamic method with an ebulliometer. With this equipment, vapor pressures of pure components can be experimentally determined in a temperature range from approx. 250 to 600 K and at pressures from about
1 mbar up to 1 bar. At a given pressure (regulated by an electronic pressure control), the boiling temperatures of a component are measured. Due to the volume of the equipment only small amounts of the substances (about 20 ml) are needed. - GLP compliance:
- no
- Type of method:
- dynamic method
- Specific details on test material used for the study:
- Purity: 99.638%
- Boiling pt.:
- 201.5 °C
- Atm. press.:
- 1 013 mBar
- Decomposition:
- no
- Conclusions:
- Normal boiling point of 2,5,7,10-Tetraoxaundecane (TOU) has been measured by means of a dynamic method with an ebulliometer at temperature range from 318.10 to 475.31K. Using the Antoine equation, the normal boiling point has been determined as 201.5°C at 1013 mbar.
- Executive summary:
Normal boiling point of 2,5,7,10-Tetraoxaundecane (TOU) has been measured by means of a dynamic method with an ebulliometer at temperature range from 318.10 to 475.31K. Using the Antoine equation, the normal boiling point has been determined as 201.5°C at 1013 mbar.
Reference
Tab. 1 Experimental vapor pressure data for 2,5,7,10-Tetraoxaundecane T (K)
T (K) |
P experimental (kPa) |
P calculated (kPa) |
1 – (Pexp/Pcalc) |
318.10 |
0.112 |
0.108 |
-3.39% |
327.83 |
0.208 |
0.213 |
2.20% |
335.33 |
0.341 |
0.347 |
1.53% |
339.90 |
0.453 |
0.460 |
1.57% |
348.32 |
0.768 |
0.756 |
-1.62% |
357.47 |
1.26 |
1.25 |
-0.20% |
366.18 |
1.96 |
1.97 |
0.20% |
374.67 |
2.99 |
2.97 |
-0.60% |
382.57 |
4.28 |
4.28 |
-0.01% |
393.07 |
6.75 |
6.75 |
-0.05% |
408.26 |
12.35 |
12.39 |
0.27% |
420.66 |
19.68 |
19.53 |
-0.79% |
427.38 |
24.71 |
24.66 |
-0.20% |
439.10 |
36.22 |
36.26 |
0.10% |
447.13 |
46.59 |
46.56 |
-0.07% |
455.19 |
59.40 |
59.18 |
-0.36% |
465.08 |
77.18 |
78.36 |
1.50% |
468.18 |
85.23 |
85.31 |
0.09% |
475.31 |
102.31 |
103.22 |
0.87% |
Tab 2a: Antoine parameters in DDB format: Log(P Torr) = A – B/(C +T °C) A : 7.37886 B : 1769.13 C : 191.857
Tab 2b: Antoine parameters in Aspen format: ln(P Torr) = A + B/(C +T °C) A : 16.9905 B : -4073.57 C : 191.857
Description of key information
Normal boiling point of 2,5,7,10-Tetraoxaundecane (TOU) has been measured by means of a dynamic method with an ebulliometer at temperature range from 318.10 to 475.31K. Using the Antoine equation, the normal boiling point has been determined as 201.5°C at 1013 mbar.
Boiling point at 760 mm Hg was determined from boiling point of the test item of 65.0°C at 4 mm Hg, 101°C at 20 mm Hg and 100°C at 24 mm Hg as supporting data.
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 201.5 °C
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