Registration Dossier
Registration Dossier
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EC number: 201-074-9 | CAS number: 77-99-6
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
In the key study (SRC PhysProp Database, 2010) the experimentally determined value for the vapour pressure is indicated to be 0.0000449 mm Hg (corresponding to 5.99E-003 Pa) at 25 °C as cited from the original data source (Daubert, Danner, 1989).
According to QSAR estimation methods (Lanxess, 2009, EPIWIN; Lanxess, 2007, Yaws), the vapour pressure is calculated to be 0.0001 mm Hg (corresponding to 0.013 Pa, Yaws method) and to be 4.22E-005 mm Hg (corresponding to 0.00563 Pa, EPIWIN method) at 25 °C, depending on the calculation method. At elevated temperatures, i. e. at 50 °C and 160 °C, the vapour pressure was determined to be <0.1 hPa and 6.7 hPa, respectively (Verschueren, 1996), and cited to be 1 Pa at 73 °C and 10 kPa at 220.5 °C in the CRC Handbook (2002).
Key value for chemical safety assessment
- Vapour pressure:
- 0.006 Pa
- at the temperature of:
- 25 °C
Additional information
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