sulfonic acid

noun

: any of numerous acids that contain the SO3H group and may be derived from sulfuric acid by replacement of a hydroxyl group by either an inorganic anion or a monovalent organic group

Examples of sulfonic acid in a Sentence

Recent Examples on the Web An entirely different set of compounds—combining unstable sulfonic acids and ammonia and pyruvic acid—produce the pungent flavor and smell. Mark Kurlansky, Bon Appétit, 6 Nov. 2023 Advertisement The Environmental Protection Agency plans to begin regulating several types of PFAS chemicals in drinking water and has proposed a strict limit of 4 parts per trillion for the chemicals perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). Ian James, Los Angeles Times, 5 Aug. 2023 Created by a team of dermatologists, the L'Oréal Paris Revitalift Derm Intensives 12% Dark Spot Serum uses a potent trio of trusted dark spot-fading ingredients (niacinamide, amino-sulfonic acid, and ferulic acid ) that work hard to fade stubborn pigmentation. Lisa Desantis, Allure, 24 Jan. 2023 For two of the chemicals, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS), the new advisories update ones issued back in 2016. John Timmer, Ars Technica, 15 June 2022 Two other chemicals, perfluorobutane sulfonic acid (PFBS) and hexafluoropropylene oxide (HFPO) have been introduced as partial replacements for the ones listed above. John Timmer, Ars Technica, 15 June 2022 One of these, called PFOS, or perfluorooctane sulfonic acid — found at airports and military sites with histories of fire foam use — tends to build up in fish. Shantal Riley, Washington Post, 12 Jan. 2022 The spray’s formula, which includes hydrogen peroxide, citric acid, and alkylbenzene sulfonic acid, also meets the EPA’s criteria for use against SARS-CoV-2, the virus that causes COVID-19. Christina Butan, PEOPLE.com, 16 Sep. 2020 Perfluorooctanoic acid, or PFOA, and perfluorooctane sulfonic acid, or PFOS, have been used in products ranging from carpets and nonstick pans to industrial processes and fire control. Lee Bergquist, Milwaukee Journal Sentinel, 19 Mar. 2018 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sulfonic acid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1873, in the meaning defined above

Time Traveler
The first known use of sulfonic acid was in 1873

Dictionary Entries Near sulfonic acid

Cite this Entry

“Sulfonic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sulfonic%20acid. Accessed 25 Feb. 2024.

Medical Definition

sulfonic acid

noun
: any of numerous acids that contain the SO3H group and may be derived from sulfuric acid by replacement of a hydroxyl group by either an inorganic anion or a monovalent organic group

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