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EC number: 911-490-9 | 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:
- November 27th, 2012 - April 7th, 2013
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- (2009)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- (2006)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- (1996)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- other: Effusion method: Isothermal thermogravimetry
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.003 Pa
- Remarks on result:
- other: 1.9E-5 mm Hg
- Temp.:
- 20 °C
- Vapour pressure:
- 0.001 Pa
- Remarks on result:
- other: 1.0E-5 mm Hg
- Conclusions:
- The vapour pressure of the substance was determined to be 2.5E-3 Pa at 25°C (1.4E-3 Pa at 20°C) using the isothermal thermogravimetric effusion method (in accordance with EC A.4, OECD 104 and EPA OPPTS 830.7950 and in compliance with GLP).
Reference
Table: Results of the isothermal TGA analysis
Temperature [°C] |
Weight loss [µg/min] |
νT [g/cm2/h] |
log νT |
log PT |
PT [Pa] |
170 |
121.2 |
1.45 E-2 |
-1.84 |
2.38 |
2.4 E2 |
130.7 |
1.56 E-2 |
-1.81 |
2.42 |
2.6 E2 |
|
180 |
209.4 |
2.50 E-2 |
-1.60 |
2.63 |
4.3 E2 |
214.7 |
2.56 E-2 |
-1.59 |
2.64 |
4.4 E2 |
|
190 |
333.5 |
3.98 E-2 |
-1.40 |
2.84 |
7.0 E2 |
331.0 |
3.95 E-2 |
-1.40 |
2.84 |
6.9 E2 |
Log PT 20°C= -2.86
Log PT 25°C= -2.60
Description of key information
The vapour pressure of the substance
was determined to be 2.5E-3 Pa at 25°C
(1.4E-3 Pa at 20°C) using the
isothermal thermogravimetric
effusion method (in accordance
with EC A.4, OECD 104 and
EPA OPPTS 830.7950 and in compliance with GLP).
Key value for chemical safety assessment
- Vapour pressure:
- 0.003 Pa
- at the temperature of:
- 25 °C
Additional information
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