Registration Dossier
Registration Dossier
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EC number: 913-023-4 | CAS number: 11135-81-2
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -12 °C
Additional information
Potassium and Sodium form a eutectic mixture whereby the melting point of the mixture is lower than that of the two component metals. The point of maximum depression, i.e. the minimum melting point is at a composition of 78% potassium and 22% sodium, which is the composition of the alloy being registered. Based on available data, the melting point at this minimum, which represents the composition being registered, is around -12C and therefore the substance will be a liquid under most ambient conditions.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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