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EC number: 203-310-6 | CAS number: 105-57-7
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:
- comparable to guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
- Report date:
- 1990
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
Test material
- Test material form:
- liquid
- Specific details on test material used for the study:
- Test material: 1,1-Diethoxyethan
Purity: 99.8 % (given by sponsor)
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 36.37 hPa
- Remarks on result:
- other: calculated from the regression equation
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 47.06 hPa
- Remarks on result:
- other: calculated from the regression equation
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 149.69 hPa
- Remarks on result:
- other: calculated from the regression equation
Vapour pressure at 50°C (if relevant for classification of gas under pressure)
- Key result
- Vapour pressure:
- 149.69 hPa
- Remarks on result:
- other: calculated from the regression equation
Any other information on results incl. tables
Results:
| Temperature [°C] | Vapour Pressure [hPa] (measurement) |
Vapour Pressure [hPa] (calculation) |
Aberration [% |
| 26.28 | 50.00 | 50.19 | -0.38 |
| 33.08 | 70.00 | 69.98 | 0.03 |
| 40.76 | 100.0 | 99.93 | 0.07 |
| 57.10 | 200.0 | 200.8 | -0,39 |
| 67.12 | 300.0 | 297.0 | 0.99 |
| 81.45 | 500.0 | 498.8 | 0.24 |
| 91.71 | 700.0 | 703.6 | -0.51 |
| 103.64 | 1045 | 1023 | 2.13 |
| 130.01 | 2099 | 2151 | -2.43 |
| 143.17 | 2942 | 3001 | -1.98 |
| 153.65 | 3855 | 3852 | 0.08 |
| 164.32 | 5012 | 4901 | 2.26 |
| 181.00 | 6938 | 6971 | -0.48 |
| 199.20 | 9964 | 9935 | 0.29 |
| 103.32 | - | 1013.25 | - |
The regression of the results leads with a mean deviation of 0.88 % to the following equation:
ln(p/hPa) = 10.5800 - 3676.50 / (244.61 + 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 from the vapour pressure curve.
Applicant's summary and conclusion
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