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EC number: 204-498-2 | CAS number: 121-79-9
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:
- February 22, 2017
- 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
- GLP compliance:
- no
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The vapour pressure of propyl gallate was determined according to OECD guideline 104 and is 3.0E-5 Pa at 20 °C and 5.9E-5 Pa at 25 °C, respectively
- Executive summary:
Due to the low mass loss at 120 °C the vapour pressure of the sample was calculated between 150 °C and 210 °C. The calculated mass loss within this temperature range is 5.14 mg (corresponds to 29.7 %), which results in a vapour pressure of 3.0E-5 Pa at 20 °C and 5.9E-5 Pa at 25 °C.
Reference
| Measured Temperature | Weight Loss vT | log (ǀvTǀ) | log (pv) | Vapor pressure pV | 1/T |
| [°C] | [mg/min] | [-] | [log (Pa)] | [Pa] | [1/K] |
| 135 | -2,24E-04 | -3,65 | -0,22 | 0,60 | 2,45E-03 |
| 150 | -2,53E-03 | -2,60 | 0,79 | 6,21 | 2,36E-03 |
| 166 | -7,93E-03 | -2,10 | 1,27 | 18,7 | 2,28E-03 |
| 181 | -2,00E-02 | -1,70 | 1,66 | 45,6 | 2,20E-03 |
| 196 | -4,70E-02 | -1,33 | 2,02 | 104 | 2,13E-03 |
| 212 | -9,70E-02 | -1,01 | 2,32 | 209 | 2,06E-03 |
Due to the low mass loss at 120 °C the vapour pressure of the sample was calculated between 150 °C and 210 °C. The calculated mass loss within this temperature range is 5.14 mg (corresponds to 29.7 %), which results in a vapour pressure of 3.0 x 10^-5 Pa at 20 °C and 5.9 x 10^-5 Pa at 25 °c .
Description of key information
The vapour pressure of propyl gallate was determined according to OECD guideline 104. Due to the low mass loss at 120 °C the vapour pressure of propyl gallate was calculated between 150 °C and 210 °C. The calculated mass loss within this temperature range is 5.14 mg (corresponds to 29.7 %), which results in a vapour pressure of 3.0E-5 Pa at 20 °C and 5.9E-5 Pa at 25 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
Due to the low mass loss at 120 °C the vapour pressure of the sample was calculated between 150 °C and 210 °C. The calculated mass loss within this temperature range is 5.14 mg (corresponds to 29.7 %), which results in a vapour pressure of 3.0E-5 Pa at 20 °C and 5.9E-5 Pa at 25 °C .
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