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aluminum sulfate

noun

, Chemistry.
  1. a white, crystalline, water-soluble solid, Al 2 (SO 4 ) 3 , used chiefly as a water-purifying agent, as a mordant, and as a size in the manufacture of paper.


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Word History and Origins

Origin of aluminum sulfate1

First recorded in 1865–70
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Example Sentences

Vitriol is copper or iron sulfate, saltpeter is potassium nitrate, and alum is an aluminum sulfate salt.

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