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EC number: 423-860-2 | CAS number: 56309-94-5
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:
- 1997-01-31
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: 92/69/EWG, A.4 (static method)
- Version / remarks:
- 1992
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 1981
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- static method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.064 Pa
- Conclusions:
- The vapour pressure of the test item at 20 °C was determined to be 0.064 Pa.
- Executive summary:
The determination of the vapour pressure was based on the following guidelines:
European Economic community (EE), EEC directive 92/69 EEC, Part A, Methods for the determination of the physico-chemical properties, A.4 “Vapour pressure”. EEC Publication No. L383, December 1992.
Organization for Economic Co-operation and Development (OECD), OECD guidelines for testing chemicals, Guideline No. 104: “Vapour pressure curve”, adopted May 12, 1981.
Using the Static Technique, the vapour pressure of the test item at 20°C was determined to be
P (20 °C) = (6.4 +/- 0.6) x 10^-2 Pa = (4.8 +/- 0.5) x 10^-4 mmHg
Reference
Table 1 Determination of the vapour pressure of the test item at 3 different temperatures, using the static technique
Measurement |
Temperature °C |
Mean vapour pressure +/- SD |
|
|
|
ln (p) |
Pa |
70 - 96 |
37.79 |
-1.86 +/- 0.03 |
0.156 +/- 0.004 |
100 - 121 |
31.66 |
-2.17 +/- 0.04 |
0.114 +/- 0.004 |
130 - 164 |
24.93 |
-2.48 +/- 0.08 |
0.084 +/- 0.005 |
Description of key information
The vapour pressure of the test item at 20 °C was determined to be 0.064 Pa (reference 4.6 -1).
Key value for chemical safety assessment
- Vapour pressure:
- 0.064 Pa
- at the temperature of:
- 20 °C
Additional information
The determination of the vapour pressure was based on the following guidelines:
European Economic community (EE), EEC directive 92/69 EEC, Part A, Methods for the determination of the physico-chemical properties, A.4 “Vapour pressure”. EEC Publication No. L383, December 1992.
Organization for Economic Co-operation and Development (OECD), OECD guidelines for testing chemicals, Guideline No. 104: “Vapour pressure curve”, adopted May 12, 1981.
Using the Static Technique, the vapour pressure of the test item at 20°C was determined to be
P (20 °C) = (6.4 +/- 0.6) x 10^-2 Pa = (4.8 +/- 0.5) x 10^-4 mmHg
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