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EC number: - | CAS number: -
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:
- From April 4, 2016 to April 14, 2016
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- not specified
- Type of method:
- dynamic method
- Specific details on test material used for the study:
- Batch n° 145
White granular powder - Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 0.023 Pa
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- <= 0 Pa
- Conclusions:
- Under the study conditions, the vapour pressure of the substance was determined to be 4.0E-04 Pa at 20°C and 2.3E-02 Pa at 50°C.
- Executive summary:
A study was conducted to determine the vapour pressure of the substance according to OECD Guideline 104. The vapour pressure of the test substance was determined by dynamic method and Grain-Watson Method. The experimentally determined vapour pressure of the test substance at 20°C was not in the recommended range of 1 to 1000 mbar for DSC-measurements. Therefore an estimation procedure "Grain-Watson method" was used. This method is applied for vapour pressures between 103 to 10-7mbar. The vapour pressure of the test substance at 20°C and 50°C was determined using equations. Under the study conditions, vapour pressure of the substance was determined to be 4.0E-04 Pa at 20°C and 2.3E-02 Pa at 50°C (Kintrup, 2016).
Reference
The test substance had a vapour pressure of <= 3.9E-09 atm (<=4.0E-04 Pa; <=4.0 E-06 mbar) at 20°C and of 2.3E-07 atm (<=2.3E-02 Pa; <=2.3E-04 mbar) at 50°C according to the definition in the OECD Guideline 104. The experimentally determined vapour pressure of the test substance at 20°C was not in the recommended range of 1 to 1000 mbar for DSC-measurements. Therefore, an estimation procedure in accordance with the test method OECD Guideline 104 was used. This method is applied for vapour pressures between 103 and 10-7 mbar.
Description of key information
The vapour pressure was determined according to OECD 104 (Kintrup 2016)
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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