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EC number: 253-981-4 | CAS number: 38517-37-2
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 May 10, 2016 to June 01, 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- not specified
- Type of method:
- dynamic method
- Specific details on test material used for the study:
- Batch no.: 3837
Appearance: white powder - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- <= 0 Pa
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- <= 0.008 Pa
- Conclusions:
- Under the study conditions, the vapour pressure of the substance was determined to be 1.2E-04 Pa at 20°C and 7.6E-03 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 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, the vapour pressure of the substance was determined to be 1.2E-04 Pa at 20°C and 7.6E-03 Pa at 50°C (Kintrup, 2016).
Reference
The test substance had a vapour pressure of <= 1.1E-09 atm (<=1.2E-04 Pa; <=1.2 E-06 mbar) at 20°c and of 7.5E-08 atm (<=7.6E-03 Pa; <= 7.6E-05 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 103and 10-7mbar.
Description of key information
The vapour pressure was determined according to OECD Guideline 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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