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EC number: 241-367-9 | CAS number: 17345-61-8
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:
- May 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- August 24, 2009
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- March 23, 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- August 1996
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 100 °C
- Vapour pressure:
- 0.26 Pa
- Temp.:
- 100 °C
- Vapour pressure:
- 0.25 Pa
- Temp.:
- 110 °C
- Vapour pressure:
- 1.2 Pa
- Temp.:
- 110 °C
- Vapour pressure:
- 1.3 Pa
- Temp.:
- 120 °C
- Vapour pressure:
- 3.3 Pa
- Temp.:
- 120 °C
- Vapour pressure:
- 4.9 Pa
- Temp.:
- 130 °C
- Vapour pressure:
- 13 Pa
- Temp.:
- 130 °C
- Vapour pressure:
- 12 Pa
- Conclusions:
- The isothermal TGA effusion method was applied for the determination of the vapour pressure of CH02906.
The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was 2.0 * 10-7 Pa and 5.9 * 10^7 Pa, respectively.
Reference
A representative weight loss curve of the test item is shown in the attached figure (WeightLoss_VP). At the beginning of the test (i.e. the first 10 min) the test-item suspension in hexane was dried at 30°C. The observed weight increase after 10 min was considered an artefact most probably caused by the pressure change in the measurement chamber when quickly heating from 30 to 100°C.
The equation of the curve was: log PT= -8419´1/T + 22.01 (r = 0.995, n = 8). The regression coefficient was > 0.99 which underlined that the measurement artefact after 10 min did not affect the determination of the vapor pressure of the test item.
Description of key information
The isothermal TGA effusion method was applied for the determination of the vapour pressure of CH02906.
Determination according to OECD 104 Guideline.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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