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EC number: 942-424-7 | CAS number: -
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:
- 24 Mar 2016 to 15 Apr 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- GLP compliance:
- no
- Type of method:
- dynamic method
- Remarks:
- Vapour-liquid equilibrium
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.28 hPa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.4 hPa
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 2.06 hPa
- Conclusions:
- Vapour pressure values of 0.28 hPa (at 20 °C), 0.40 hPa (at 25 °C) and 2.06 hPa (at 50 °C) were determined for the test substance according to E.U. Method A.4.
Reference
Results
Dynamic method: Vapour-liquid equilibrium (VLE)
The vapour pressure was measured in the temperature range of 68.1 to 153.4 °C. The measured vapour pressure values together with the measured temperatures are listed in the table.
Results of the dynamic method
No. |
Temperature / °C |
Vapour pressure / hPa |
Remark |
|
1 |
68.1 |
5.6 |
Measured up |
|
2 |
119.8 |
63.2 |
Measured up |
|
3 |
122.6 |
74.8 |
Measured up |
|
4 |
136.6 |
124.5 |
Measured up |
|
5 |
146.0 |
174.7 |
Measured up |
|
6 |
153.4 |
224.1 |
Measured up |
|
7 |
149.8 |
199.3 |
Measured down |
|
8 |
141.3 |
149.6 |
Measured down |
|
9 |
111.5 |
49.7 |
Measured down |
|
From the measured data points of the vapour pressure curve, the constants A, B and C of the Antoine equation were calculated:
Antoine equation:
Log10 ρ = A + B / C + θ
A = 10.7528
B = -2727.01
C = 273.15
Final results
The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C, according to Regulation EC 440/2008 Method A.4. Vapour Pressure.
Calculated vapour pressure values for 20, 25 and 50 °C
Temperature / °C |
Vapour pressure / hPa |
20 |
0.28 |
25 |
0.40 |
50 |
2.06 |
Description of key information
Vapour pressure: 0.28 hPa at 20 °C (EU Method A.4., dynamic method: vapour-liquid equilibrium)
Key value for chemical safety assessment
- Vapour pressure:
- 0.28 hPa
- at the temperature of:
- 20 °C
Additional information
Vapour pressure values of 0.28 hPa (at 20 °C), 0.40 hPa (at 25 °C) and 2.06 hPa (at 50 °C) were determined for the test substance according to E.U. Method A.4.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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