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EC number: 610-949-8 | CAS number: 53045-70-8
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:
- 31.08.-11.10.2006
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 92/69/EEC
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 86 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 150 Pa
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 1 390 Pa
- Conclusions:
- The vapour pressure of the test item was determined to be 86 Pa (20 °C), 150 Pa (25 °C) and 1390 Pa (50 °C).
- Executive summary:
A study was performed according to OECD TG 104 and Commission Regulation (EC) No. 440/2008, method A.4 in order to determine the vapour pressure of the test item by using the effusion method. The vapour pressure was measured using the dynamic method at various temperatures between about 51 and 138 °C. The vapour pressures of the test item at 20, 25 and 50 °C were extrapolated by using the Antoine constants with following results: 86 Pa (20 °C), 150 Pa (25 °C) and 1390 Pa (50 °C).
Reference
The vapour pressure was measured with the dynamic method in the temperature range of 51 °C to
138 °C. The measured vapour pressures at the corresponding temperatures are listed in the following
table:
Table 1: Measured vapour pressures and corresponding temperatures
Temperature /°C | Vapour pressure / hPa |
51.2 | 14.9 |
60.8 | 30.0 |
69.1 | 50.0 |
76.6 | 75.2 |
82.0 | 100.0 |
90.6 | 150.1 |
97.5 | 200.5 |
107.1 | 300.1 |
114.2 | 399.9 |
120.6 | 501.0 |
130.4 | 699.0 |
138.4 | 899.5 |
The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C.
Table 2 : Final vapour pressures
T/°C | p/hPa | p/Pa |
20 | 0.86 | 86 |
25 | 1.5 | 150 |
50 | 13.9 | 1390 |
Description of key information
The vapour pressure of the test item was determined to be 86 Pa (20 °C), 150 Pa (25 °C) and 1390 Pa (50 °C) using the effusion method.
Key value for chemical safety assessment
- Vapour pressure:
- 150 Pa
- at the temperature of:
- 25 °C
Additional information
A study was performed according to OECD TG 104 and Commission Regulation (EC) No. 440/2008, method A.4 in order to determine the vapour pressure of the test item by using the dynamic method. The vapour pressure was measured at various temperatures between about 51.2 and 138.4 °C. The vapour pressures of the test item at 20, 25 and 50 °C were extrapolated by using the Antoine constants with following results: 86 Pa (20 °C), 150 Pa (25 °C) and 1390 Pa (50 °C)
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