Definition of Potasseum
Po*tas"si*um (?), n. [NL. See
Potassa, Potash.] (Chem.) An Alkali element
having atomic number 19, occurring abundantly but always combined, as
in the chloride, sulphate, carbonate, or silicate, in the minerals
sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.1.
Symbol K (Kalium).
&fist; It is reduced from the carbonate as a soft white metal,
lighter than water, which oxidizes with the greatest readiness, and,
to be preserved, must be kept under liquid hydrocarbons, as naphtha or
kerosene. Its compounds are very important, being used in glass
making, soap making, in fertilizers, and in many drugs and
chemicals.
Potassium permanganate, the salt
KMnO4, crystallizing in dark red prisms having a greenish
surface color, and dissolving in water with a beautiful purple red
color; -- used as an oxidizer and disinfectant. The name chameleon
mineral is applied to this salt and also to potassium
manganate. -- Potassium bitartrate. See
Cream of tartar, under Cream.
- Webster's Unabridged Dictionary (1913)
- a soft, waxy, silvery reactive metal that is never found unbound in nature; an element (symbol K) with an atomic number of 19 and atomic weight of 39.0983. The symbol is derived from the Latin kalium.
- The Nuttall Encyclopedia
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