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EC number: 247-415-5 | CAS number: 26021-57-8
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 2020-04-02 to 2020-05-28
- 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
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: isothermal thermogravimetry
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.002 Pa
- Conclusions:
- The vapour pressure of the test item was determined to be 1.66*10 -3 Pa at 20°C.
- Executive summary:
The aim of the test was to determine the vapour pressure of the test item according to the OECD 104 guideline/ A.4 method (isothermal thermogravimetrical effusion method) and following GLP.
A value of the vapour pressure of the test item was assessed using the data obtained between 130°C and 150°C. The vapour pressure of the test item was determined to be 1.66*10 -3 Pa at 20°C.
Reference
The measurement of the vapour pressure was done with the reproducible weight loss values above > 1 µg/min in the temperature range between 110 and 150°C. For the evaluation, the weight losses between 130 and 150°C has been considered.
Equation of the evaporation rates versus temperature (1000/T) (temperature range between 130 and 150°C):
y=-4.412x + 8.269 (R2=0.9908).
The vapour pressure of the test item was determined to be 1.66*10 -3 Pa at 20°C.
Description of key information
The vapour pressure of the test item was determined to be 1.66*10 -3 Pa at 20°C by isothermal thermogravimetrical effusion method.
Key value for chemical safety assessment
- Vapour pressure:
- 0.002 Pa
- at the temperature of:
- 20 °C
Additional information
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