Registration Dossier
Registration Dossier
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EC number: 232-055-3 | CAS number: 7784-25-0
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Not relevant due to decomposition.
No significant volatilization anticipated at ambient temperature.
Key value for chemical safety assessment
Additional information
An expert statement was provided, showing that vapour pressure cannot be measured nor estimated by calculation due to decomposition upon heating below the boiling point of the substance.
Volatilization of crystallisation water is anticipated to occur also under reduced pressure, therefore measurement would correspond to the partial pressure of water over the salt, and not to the substance itself.
As a solid at ambient temperature, no significant volatilization is anticipated for aluminium ammonium bis(sulfate).
Supporting litterature data for the similar individual salts aluminium sulfate and ammonium sulfate support the evidence of very low vapour pressure and decomposition.
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