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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:
- 2014-05-23 to 2014-05-30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP Guideline study
- Qualifier:
- according 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:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 0.009 Pa
- Temp.:
- 70 °C
- Vapour pressure:
- 0.015 Pa
- Transition / decomposition:
- no
- Conclusions:
- The vapour pressure was found to be 9.1E-03 Pa at 25 ºC and 1.5E-02 Pa at 70 ºC
- Executive summary:
Test Guidance
The vapour pressure was determined using a vapour pressure balance with measurements being made at several temperatures. Testing was conducted using a procedure designed to be compatible with Method A4 Vapour Pressure of Commission Regulation (EC) No 440/2208 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.
Method
The vapour pressure was determined using a vapour pressure balance. The temperature of the sample was controlled electronically. The mass and temperature readings were recorded automatically into a computer file.
A preliminary run was undertaken over the temperature range 20°C to 85°C to provide information for a suitable temperature range for the determination.
25°C Determination
A sequence of runs was started after a sample of test item had been under vacuum for approximately 17.5 hours. Temperature and pressure readings were taken between 20°C and 30°C with a one hour dwell at 20°C between runs.
70°C Determination
A further sequence of runs was started after a sample of test item had been under vacuum for approximately 91.25 hours. Temperature and pressure readings were taken between 65°C and 75°C with a one hour dwell at 65°C between runs.
Result
No decomposition was observed.
The vapour pressure was found to be 9.1E-03 Pa at 25 ºC and 1.5E-02 Pa at 70 ºC
Reference
Description of key information
The vapour pressure was found to be 9.1E-03 Pa at 25 ºC and 1.5E-02 Pa at 70 ºC
Key value for chemical safety assessment
- Vapour pressure:
- 0.009 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure was found to be 9.1E-03 Pa at 25 ºC and 1.5E-02 Pa at 70 ºC
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