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aluminum sulfate

American  

noun

Chemistry.

  1. a white, crystalline, water-soluble solid, Al 2 (SO4 ) 3 , used chiefly as a water-purifying agent, as a mordant, and as a size in the manufacture of paper.

Etymology

Origin of aluminum sulfate

First recorded in 1865–70

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Regulators suspect a significant portion of Stauffer’s waste is alum mud, a radioactive sludge that is a byproduct of producing aluminum sulfate.

From Los Angeles Times • May 14, 2024

Although such products are natural, they almost always contain alum in the form of potassium aluminum sulfate or ammonium aluminum sulfate.

From Seattle Times • Jun. 15, 2022

Addressing alkaline soil requires products like sphagnum peat, elemental sulfur, aluminum sulfate, iron sulfate, acidifying nitrogen, and organic mulches, according to Grove Collaborative.

From Seattle Times • Feb. 26, 2022

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

From Rembrandt's Etching Technique: An Example by Morse, Peter

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.