Registration Dossier
Registration Dossier
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EC number: 252-487-6 | CAS number: 35285-68-8
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Vapour pressure (calculated): < 0.001 Pa at 20°C.
Key value for chemical safety assessment
Additional information
Experimental vapour pressure data are not available.
The test substance is the sodium salt of ethyl 4-hydroxybenzoate. It appears solid at ambient temperature with a high melting point (268 °C). For ionic solids with high melting points it is unlikely to have a high vapour pressure at ambient temperature. Thus it is scientifically justified to use calculated, non-experimental data for this endpoint.
The vapour pressure is calculated from structural parameters. The algorithm is derived from a correlation of a large number of chemical structures with experimental vapour pressures. Software: MPBPWin v1.43 (Syracuse Research Corp.)
The vapour pressure was determined to be < 0.001 Pa at 20 °C by the calculation method defined above.
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