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EC number: 603-923-2 | CAS number: 135590-91-9
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:
- 18.02.1991 - 19.02.1991
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes
- Remarks:
- Pharma Research Referat (GLP)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 50 °C
- Vapour pressure:
- 0.001 Pa
Reference
Measurement of vapour pressure curve of Hoe 107892
T(°C) |
P(mbar) meas. |
P(mbar)calc. |
Relat. dev (%) |
T(°C) |
P(mbar) meas. |
P(mbar)calc. |
Relat. dev (%) |
68.4 |
6.16E-05 |
6.15E-05 |
0.1 |
98.6 |
1.82E-03 |
1.82E-03 |
-0.0 |
76.7 |
1.61E-04 |
1.66E-04 |
-2.8 |
108.2 |
4.88E-03 |
4.78E-03 |
2.1 |
81.8 |
2.93E-04 |
2.97E-04 |
-1.4 |
109.5 |
5.43E-03 |
5.42E-03 |
0.2 |
83.9 |
3.57E-04 |
3.76E-04 |
-5.4 |
116.3 |
1.06E-02 |
1.04E-02 |
2.3 |
88.1 |
6.44E-04 |
5.98E-04 |
7.1 |
118.1 |
1.15E-02 |
1.23E-02 |
-7.0 |
89.9 |
7.46E-04 |
7.27E-04 |
2.6 |
126.7 |
2.75E-02 |
2.69E-02 |
2.2 |
97.8 |
1.70E-03 |
1.68E-03 |
1.1 |
127.3 |
2.78E-02 |
2.84E-02 |
-2.1 |
Calculated vapour pressures: 6.3E-08 mbar (4.7E-08 torr) at 20°C; 1.4E-07 mbar (1.1E-07 torr) at 25°C; 5.7E-06 mbar (4.3E-06 torr) at 50°C. Vap. heat LP = 118.4 kJ/mol
Antoine equation: logP=A+B/(C+T(°C)); A=13.898422, B=-6185.205, C=273.15
Temperatures for round pressures:
P(mbar) |
T(°C) |
1.0E-06 |
37.7 |
1.0E-05 |
54.1 |
1.0E-04 |
72.4 |
1.0E-03 |
92.9 |
1.0E-02 |
115.9 |
1.0E-01 |
142.0 |
1.0E+00 |
171.9 |
1.0E+01 |
206.4 |
Description of key information
6.3 x 10-6 Pa at 20 °C (EU Method A.4, effusion method: vapour pressure balance)
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure is 6.3 x 10-6 Pa at 20 °C , 1.4 x 10-5 Pa at 25 °C and 5.7 x 10-4 Pa at 50 °C
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