Description of Potassium (K) Metal
Synonyms: potassium ingots, K, potassium blocks, potassium cubes, potassium sticks.
CAS No: 7440-09-7.
Chemical Properties: 98% to 99.95%.
Physical Properties: Small ingots under argon in glass or small blocks.
Specifications of Potassium (K) Metal
Molecular Weight (g/mol.)
Apparent Density (g/cm3)
Specific Heat @25°C (cal/g-°C)
Melting Point (°C)
Boiling Point (°C)
Thermal Conductivity @200°C (cal/s-cm-°C)
Mohs Hardness @20°C
cubic structure, body-centered
Applications of Potassium (K) Metal
a) Potassium forms alloys with many metals, but only the alloy obtained with the sodium has some interest in the technology of nuclear reactors. The more important compounds, from the point of view of applications, are chloride, sulfate, nitrate, carbonate, and hydroxide.
b) The potassium chloride, as well as the hydroxide, is the main source to obtain other salts; the latter one is also used as the industrial reagent for producing liquid soaps, as the electrolyte in certain batteries and as the absorbent of carbon dioxide and hydrogen sulfide.
c) Another less common salt is used in Medicine: the bromide as the sedative, the potassium permanganate as the bactericide, etc.