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EC number: 205-509-3 | CAS number: 141-91-3
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- no
- Type of method:
- dynamic method
- Remarks:
- under nitrogen
Test material
- Reference substance name:
- 2,6-dimethylmorpholine
- EC Number:
- 205-509-3
- EC Name:
- 2,6-dimethylmorpholine
- Cas Number:
- 141-91-3
- Molecular formula:
- C6H13NO
- IUPAC Name:
- 2,6-dimethylmorpholine
- Reference substance name:
- 205-509-2
- IUPAC Name:
- 205-509-2
- Test material form:
- other: liquid
- Details on test material:
- Name of test material (as cited in study report): 2,6-dimethylmorpholine, cis, trans
Analytical purity: 98,5 % (by GC)
Constituent 1
Constituent 2
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 20 °C
- Vapour pressure:
- 4.46 hPa
- Remarks on result:
- other: calculated from the regression equation
- Temp.:
- 25 °C
- Vapour pressure:
- 6.21 hPa
- Remarks on result:
- other: calculated from the regression equation
- Temp.:
- 50 °C
- Vapour pressure:
- 26.78 hPa
- Remarks on result:
- other: calculated from the regression equation
Any other information on results incl. tables
Results:
Temperature [°C] |
Vapour pressure (exp.) [hPa] |
Vapour pressure (calc.) [hPa] |
Aberration [%] |
8.81 |
2.03 |
2.027 |
0.14 |
14.36 |
3.03 |
3.023 |
0.23 |
21.84 |
5.03 |
5.036 |
-0.11 |
27.10 |
7.03 |
7.079 |
-0.69 |
32.61 |
9.98 |
9.962 |
0.18 |
44.70 |
20.00 |
20.051 |
-0.26 |
52.15 |
30.00 |
29.901 |
0.33 |
62.35 |
50.01 |
49.886 |
0.25 |
69.54 |
70.00 |
69.963 |
0.05 |
77.55 |
100.0 |
99.93 |
0.07 |
94.59 |
199.9 |
200.03 |
-0.07 |
105.59 |
299.9 |
300.29 |
-0.13 |
120.67 |
499.5 |
500.08 |
-0.12 |
131.49 |
699.6 |
699.68 |
-0.01 |
144.57 |
1019.9 |
1018.93 |
0.09 |
144.08 |
- |
1013.25 |
- |
The regression of the results leads with a mean deviation of 0.45 % to the following equation:
ln(p/hPa) = 9.9307 - 3480.09 / (206.82 + t/°C)
The vapour pressure at 20 °C, 25 °C and 50°C was calculated from the regression equation.
The normal boiling temperature was obtained by intrapolation/extrapolation from the vapour pressure curve.
Applicant's summary and conclusion
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