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EC number: 203-382-9 | CAS number: 106-30-9
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:
- 2015-10-28
- 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Test Guideline 113 (1981): Screening Test for Thermal Stability and Stability in Air
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- dynamic method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 4.27 hPa
- Temp.:
- 25 °C
- Vapour pressure:
- 5.34 hPa
- Temp.:
- 50 °C
- Vapour pressure:
- 14.6 hPa
- Conclusions:
- The vapour pressure of the test item was found to be 4.27 hPa at 20 °C, 5.34 hPa at 25 °C and 14.60 hPa at 50°C.
- Executive summary:
In the current study the vapour pressure of the test item was assessed according to the OECD test guideline 104 (dynamic method: vapour-liquid equilibrium). In total 9 measurements were performed in the temperature range of 54.3 to 118.9 °C.
It was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50°C. The vapour pressure of the test item was found to be 4.27 hPa at 20 °C, 5.34 hPa at 25 °C and 14.60 hPa at 50°C.
Reference
Thermal stability test:
The test item showed no exothermic effects in the temperature range of 25 -300°C.
Main test:
In total 9 measurements were performed in the temperature range of 54.3 to 118.9 °C
| No. | Temperature (°C) | Vapour pressure (hPa) | Remark |
| 1 | 54.3 | 18.7 | measured up |
| 2 | 81.5 | 39.5 | measured up |
| 3 | 99.5 | 69.9 | measured up |
| 4 | 106.5 | 89.5 | measured up |
| 5 | 113.9 | 110 | measured up |
| 6 | 118.9 | 129.5 | measured up |
| 7 | 110.8 | 99.1 | measured down |
| 8 | 104.1 | 79.6 | measured down |
| 9 | 90.0 | 48.5 | measured down |
The Antoine equation was applied, and the Antoine constant were derived by regression:
A = 8.3767
B = -1684.41
C = 273.15
Description of key information
The vapour pressure of the test item was found to be 4.27 hPa at 20 °C, 5.34 hPa at 25 °C and 14.60 hPa at 50°C.
Key value for chemical safety assessment
- Vapour pressure:
- 4.27 hPa
- at the temperature of:
- 20 °C
Additional information
In a recent study according to the OECD test guideline 104 (dynamic method: vapour-liquid equilibrium) the vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50°C. The vapour pressure was found to be 4.27 hPa at 20 °C, 5.34 hPa at 25 °C and 14.60 hPa at 50°C.
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