Registration Dossier
Registration Dossier
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EC number: 231-626-4 | CAS number: 7659-86-1
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of 2 EHTG at 20°c and 25°C under normal pressure of 101.3kPa was calculated to be:
2.4+/-0.15 Pa @20°C
3.6 +/- 0.15 Pa @ 25°c
Key value for chemical safety assessment
- Vapour pressure:
- 3.6 Pa
- at the temperature of:
- 298.15 K
Additional information
Measurig the vapour pressure of the test material under normal pressure is not possible because the test material turns to dark brownish color and decomposes at temperature above 150°C. For the results in the study of S.P Tremain the measurements were conducted with an isoteniscope under nearly normal pressure with boiling point high above the mentionned decomposition point of the substance. Therefore the calculated values from indirect measurements (Scheer, Sablowski, Folsing experimental study) seem more reliable.
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