Registration Dossier
Registration Dossier
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EC number: 940-734-7 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
vapour pressure (whole substance): 0.00012 Pa, 0.00031 Pa and 0.02 Pa at 20°C, 25°C and 50°C respectively (measured)
vapour pressure (individual constituents): 4.5E-06 to 4.0E-01 Pa at 25°C (QSAR)
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
Vapour pressure values of 0.00012 Pa, 0.00031 Pa and 0.02 Pa at 20°C, 25°C and 50°C respectively were determined for the substance using dynamic method in accordance with OECD 104 test method. The measurements were made at several temperatures (157 - 277°C) and linear regression analysis used to calculate the vapour pressures at 20°C, 25°C and 50°C. The result is considered to be reliable and selected as key study.
Since the submission substance is a UVCB substance, the vapour pressures of the individual constituents are also important. Measured vapour pressure for the whole substance is preferred for the purpose of human health exposure assessment while the vapour pressure of individual constituents is useful for environmental risk characterisation. The vapour pressures of the individual constituents were determined using a validated QSAR estimation method. Vapour pressure in the range 4.5E-06 to 4.0E-01 Pa at 25°C was determined for the constituents of the submission substance.
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