aluminum sulfate

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.

Word History and Origins

Origin of aluminum sulfate¹

First recorded in 1865–70

Example Sentences

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

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

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

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The aluminum sulfate will be applied to three quarters of the lake starting Wednesday.

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The treatment is alum, which is a combination of aluminum sulfate and sodium aluminate.

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