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EC number: 700-879-7 | CAS number: 1379822-00-0
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:
- 2013-04-02 to 2013-04-11
- 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:
- dated 31 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- adopted 23. Mar 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- dated August 1996
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.001 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.002 Pa
- Conclusions:
- The vapour pressure of the test item was determined to be 0.00109 Pa at 20 °C and 0.00150 Pa at 25 °C, respectively.
- Executive summary:
A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item SIKA Hardener MTJ. The vapour pressure of the test item SIKA Hardener MTJ was determined at three different temperatures (30, 45 and 60 °C) using the effusion method (weight loss). All measured values showed good reproducibility, giving relative standard deviations of less than 25 %, and perfect correlation. Therefore, the result of the test according to the guideline criteria was considered to be valid. The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The vapour pressure was calculated to be 0.00109 Pa at 20 °C and 0.00150 Pa at 25 °C, respectively.
Reference
The measured values for temperature and vapour pressure were evaluated as follows:
Parameter |
T |
P |
1/T |
log P |
Unit |
K |
Pa |
1/K |
log Pa |
Values |
303.2 |
2.05E-03 |
3.2982E-03 |
-2.6880 |
318.2 |
4.82E-03 |
3.1427E-03 |
-2.3174 |
|
333.2 |
1.08E-02 |
3.0012E-03 |
-1.9683 |
A graph with log P vs. 1/T was plotted.Since the values were correlated by a linear relation, the data could be fitted by linear regression.
Parameter |
Value |
Slope |
-2422.8 |
Intercept |
5.3010 |
Correlation Coefficient r |
-1.0000 |
Coefficient of Determination r2 |
0.9999 |
The following vapour pressures were determined experimentally and considered as valid (mean and standard deviation given):
T |
T |
P |
Stand. Dev. P |
RSD P |
°C |
K |
Pa |
Pa |
% |
30.0 |
303.2 |
2.05E-03 |
4.69E-04 |
22.9% |
45.0 |
318.2 |
4.82E-03 |
7.28E-04 |
15.1% |
60.0 |
333.2 |
1.08E-02 |
1.90E-03 |
17.6% |
Description of key information
The vapour pressure of the test item was determined to be 0.00109 Pa at 20 °C and 0.00150 Pa at 25 °C, respectively.
Key value for chemical safety assessment
- Vapour pressure:
- 0.001 Pa
- at the temperature of:
- 20 °C
Additional information
A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item SIKA Hardener MTJ. The vapour pressure of the test item SIKA Hardener MTJ was determined at three different temperatures (30, 45 and 60 °C) using the effusion method (weight loss). All measured values showed good reproducibility, giving relative standard deviations of less than 25 %, and perfect correlation. Therefore, the result of the test according to the guideline criteria was considered to be valid. The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The vapour pressure was calculated to be 0.00109 Pa at 20 °C and 0.00150 Pa at 25 °C, respectively.
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