copper sulfate

American  

noun

Chemistry.

1. blue vitriol.

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copper sulfate Scientific  

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: CuSO ₄ ·5H ₂ O.

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Etymology

Origin of copper sulfate

First recorded in 1890–95

Example Sentences

Some chemical compounds, like copper sulfate, are allowed to help control plant diseases, but need to be used in a way that minimizes their accumulation on soil and avoids leaving residues on crops.

From Salon • Jan. 2, 2025

Silverwood Lake was treated with copper sulfate on Tuesday in an effort to control the algal bloom, agency officials said.

From Los Angeles Times • May 8, 2024

But if it bothers you, spray affected areas with 1 teaspoon of copper sulfate diluted in 8 gallons of water.

From Seattle Times • Jan. 25, 2023

They have considered everything from dropping clay on the algae to infusing it with ozone or hydrated copper sulfate.

From Washington Post • Aug. 28, 2018

Four ounces of a water solution of copper sulfate, made by dissolving one-quarter pound of this drug in one gallon of hot water, may be added to each gallon of drinking water.

From Common Diseases of Farm Animals by Craig, R. A., D. V. M.