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EC number: 433-460-1 | CAS number: 210880-92-5
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:
- 22-23 Jun 1999
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- GLP compliance:
- yes
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
Reference
Vapour pressure is strictly proportional to the measured (at different temperatures) mass differences. The vapour pressure - temperature relationship is given by:
log VP (in Pa) = Slope/T (K) + Intercept
Summary results of 6 runs are given in the table below.
Run |
Temp. range (°C) |
Slope |
SD in slope |
Intercept |
SD in intercept |
Log VP (in Pa at 25 °C) |
VP at 25 °C (Pa) |
1 |
155 -165 |
-8918.070 |
258.545 |
18.944 |
0.597 |
-10.967 |
1.079E-11 |
2 |
161 -151 |
- 8030.248 |
224.984 |
17.004 |
0.524 |
-9.930 |
1.175E-10 |
3 |
152 -165 |
- 7313.304 |
238.099 |
15.071 |
0.552 |
-9.458 |
3.483E-10 |
4 |
148 - 165 |
- 8803.934 |
181.036 |
18.600 |
0.421 |
-10.928 |
1.180E-11 |
5 |
150 - 165 |
- 7508.806 |
149.360 |
15.578 |
0.347 |
-9.607 |
2.472E-10 |
6 |
147 - 161 |
- 8832.562 |
143.463 |
18.745 |
0.336 |
-10.879 |
1.321E-10 |
Mean |
1.248E-10 |
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Description of key information
1.3E-10 Pa at 25 °C
3.8E-11 Pa at 20 °C
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure was determined in accordance with OECD 104 and EU Method A.4 (vapour pressure balance).
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
