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Home > Scrap General > Scrap Metal Commodities Reference - S > Sodium


Sodium is one of the "alkali" metals, being the metallic constitute of soda and common salt. Sodium possesses all the properties of patassium, but is slightly heavier and less chemically reactive. Thus, sodium, when thrown into water, vigorously interacts with that liquid, with the evolution of hydrogen and the formation of sodium hydroxide (caustic soda) in solution, but the energy of this reaction between potassium and water, so that the hydrogen evolved in the sodium reaction does not take fire like it does in potassium.
Like potassium metal, metallic sodium is a white, lustrous metal, which is soft enough to be cut with a knife. Exposed to air, it oxidises with great rapidity, so that it is necessary to preserve it under oil such as naphtha. In thin layers on glass sodium appears yellowish-brown. It alloys with potassium and forms amalgams with mercury.

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