[chemical structure]
4K-Na
[chemical characteristics]
Silver soft solid or liquid. Reacts violently with acid, carbon dioxide, moisture and water, releases hydrogen, spontaneously ignites, and sometimes even explodes. Density: 0.847 g/ml (100 °C) (K78%, Na22%); 0.886克/毫升 (100 ° C) (K56%, Na44%) Melting point: -11 ° C (K78%, Na22%); 19 ° C (K56%, Na44%);
[limit parameters]
Boiling point: 784 ° C (K78%, Na22%); 825 ° C (K56%, Na44%);
[Application] The coolant used in the liquid metal nuclear reactor is a sodium-potassium alloy, which is liquid at normal temperature.
Melting point of sodium potassium alloy
Sodium potassium melting point
20% 80% -10 °C
22% 78% -11 °C
24% 76% -3.5 °C
40% 60% 5 °C