potassium hydroxide

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Noun

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potassium hydroxide (uncountable)

  1. (inorganic chemistry) The alkaline base KOH, once known as caustic potash; it has a number of industrial uses, including the manufacture of bleach.
    Synonyms: caustic potash, (obsolete) potassa
    • 1885, American Journal of Science, 3rd Series, Volume 30, page 57:
      The gases passed over a hot roll of copper gauze, then through a weighed calcium chloride tube, which absorbed the water, into an azotometer containing a concentrated solution of potassium hydroxide where the nitrogen was measured.

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