Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 211-776-7 | CAS number: 694-83-7
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2009
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Basic data given.
- Reason / purpose for cross-reference:
- reference to same study
- Principles of method if other than guideline:
- Vapour pressure measurement by the dynamic method.
- GLP compliance:
- no
- Type of method:
- dynamic method
- Remarks:
- under nitrogen
- Temp.:
- 20 °C
- Vapour pressure:
- 0.46 hPa
- Remarks on result:
- other: extrapolated value based on measured values
- Temp.:
- 54.3 °C
- Vapour pressure:
- 5 hPa
- Conclusions:
- The test substance has a vapour pressure of 0.46 hPa at 20 °C.
- Executive summary:
The vapour pressure of the test substance was measured by the dynamic method under nitrogen. The test substance has a vapour pressure of 0.46 hPa at 20 °C (extrapolated value based on measured values).
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 3 Jan 1986
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Basic data given: Comparable to guideline OECD TG 104.
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- not specified
- Type of method:
- dynamic method
- Temp.:
- 20 °C
- Vapour pressure:
- 51.6 Pa
- Conclusions:
- The vapour pressure of the test substance is 51.6 Pa at 20 °C.
- Executive summary:
The vapour pressure of the test substance was determined similar to OECD TG 104 by the dynamic method.
The vapour pressure of the test substance is 51.6 Pa at 20 °C.
Referenceopen allclose all
The regression of the results leads with a mean deviation of 0.13% to the following equation:
ln p (bar) = 9.5883 -3674.457/(192.52 + (t/°C))
temperature |
pressure (exp.) |
pressure (calc.) |
dev |
30.34 |
1.01 |
1.012 |
-0.22 |
40.01 |
2.00 |
2.001 |
-0.07 |
46.13 |
3.00 |
2.998 |
0.07 |
54.30 |
5.00 |
4.998 |
0.25 |
60.03 |
7.00 |
6.992 |
0.11 |
66.44 |
10.01 |
10.027 |
-0.17 |
79.65 |
19.99 |
19.989 |
0.00 |
88.10 |
29.99 |
30.040 |
-0.17 |
99.49 |
49.99 |
50.108 |
-0.24 |
107.46 |
69.97 |
70.030 |
-0.09 |
116.49 |
99.97 |
100.190 |
-0.22 |
135.55 |
200.00 |
199.860 |
-0.07 |
147.87 |
299.70 |
299.58 |
0.04 |
164.83 |
499.80 |
499.48 |
0.06 |
176.89 |
699.70 |
698.21 |
0.21 |
191.67 |
1019.90 |
123.15 |
-0.32 |
Measurement data:
MEASURED TEMP. PRESS. |
ERROR IN PRESSURE USING EQN % ERR DP1 |
||
85.097 |
20.17 |
0.208 |
0.04 |
100.763 |
40.27 |
-0.260 |
-0.10 |
117.958 |
79.99 |
-0.147 |
-0.12 |
129.092 |
120.19 |
0.018 |
0.02 |
137.435 |
160.13 |
0.075 |
0.12 |
144.061 |
199.05 |
0.079 |
0.16 |
157.326 |
300.40 |
0.107 |
0.32 |
171.455 |
450.45 |
0.041 |
0.18 |
182.172 |
599.70 |
-0.121 |
-0.73 |
The following Antoine Equation was fit to the measurement data:
ln(P)= A + B/(C+T)
P is in mm Hg
T is in °C
A = 16.38429
B = -3820.722
C = 200.411
The vapor pressure of the test substance
was calculated from the Antoine equation shown above.The vapor pressure of the test substance at 20 °C is = 0.387 mm Hg (51.6 Pa)
Description of key information
The vapour pressure of the test substance is 51.6 Pa at 20 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 51.6 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of the test substance was determined similar to OECD TG 104 by the dynamic method.
The vapour pressure of the test substance is 51.6 Pa at 20 °C.
A supporting study from another laboratory reports a vapour pressure of 46 Pa at 20 °C measured also by the dynamic method.
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.
