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copper sulfate

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noun Chemistry.
  1. blue vitriol.

Origin of copper sulfate

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
copper sulfate in Science

copper sulfate

  1. A crystalline salt that is soluble in water and slightly soluble in alcohol. In its anhydrous form it is white, and in its hydrous form it is blue. Copper sulfate is used in agriculture, textile dyeing, leather treatment, electroplating, and the manufacture of germicides. In its blue form it is also called blue vitriol. Chemical formula: CuSO4·5H2O.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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