Registration Dossier
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EC number: 939-042-8 | CAS number: 1482217-03-7
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:
- 30th May 2012 - 03rd September 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- 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
- Key result
- Test no.:
- #1
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 0 Pa
- Key result
- Test no.:
- #2
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 0 Pa
- Conclusions:
- The test substance, T-1620L, was found to have mean vapour pressure of 8 x 10-8 Pa at 25°C.
Reference
A quantity of test substance (0.37 g) was added to the furnace, the apparatus assembled and evacuated to a pressure of less than 1 x 10-5 Torr (1.3 x 10-3 Pa). After stabilisation at a given temperature, the shutter was opened to allow a stream of vapour to impact upon one balance pan. The temperature and pan deflection were recorded on a chart recorder. The trace obtained enabled the calculation of mass difference. The furnace temperature was then raised in steps of approximately 10ºC and further measurements taken. Initial runs were disregarded, the high results being indicative of degassing and/or removal of volatile impurities. Two definitive runs were then performed between temperatures of 108 and 154°C, the pressure being kept at less than 1 x 10-5 Torr (1.3 x 10-3 Pa) throughout. Mass differences, condensation rates and the sample temperature were monitored on a chart recorder on every occasion that the shutter was opened.
Description of key information
The test substance, T-1620L, was found to have a vapour pressure of 8 x 10^-8 Pa at 25°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
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