ammonium sulfate

noun

Chemistry.

1. a white, crystalline, water-soluble solid, (NH4 ) 2 SO 4 , used chiefly as a fertilizer.

ammonium sulfate

1. A brownish-gray to white crystalline salt used in fertilizers and water purification. Chemical formula: (NH ₄ ) ₂ SO ₄ .

Word History and Origins

Origin of ammonium sulfate¹

First recorded in 1800–85

Example Sentences

They are usually extracted by pumping large quantities of ammonium sulfate or a similar solution into the ground.

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The method extracted a higher percentage of the REEs more quickly than conventional leaching and needed less ammonium sulfate.

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The railroad says it also carries fertilizers, including phosphate, urea, ammonium sulfate, ammonium nitrate and anhydrous ammonia.

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For example, ammonium sulfate — a principal ingredient of PM2.5 particles — has been associated with ischaemic heart disease, as have particles from diesel engines.

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Agriculture has the next biggest impact, contributing to one-fifth of deaths4 — largely through ammonia released by manure and fertilizer use, which combines with sulfate and nitrate in the air to form ammonium sulfate and ammonium nitrate and thus PM2.5.

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