sodium hydroxide

noun

: a white brittle solid NaOH that is a strong caustic base used especially in making soap, rayon, and paper

Examples of sodium hydroxide in a Sentence

Recent Examples on the Web The American Chemistry Council, the chemical industry's largest lobbying group, said a 15-year transition period is needed to avoid a significant disruption of chlorine and sodium hydroxide supplies. Matthew Daly, Quartz, 18 Mar. 2024 This also includes the chlor-alkali industry, which uses asbestos diaphragms in the production of sodium hydroxide and chlorine, which are crucial for disinfecting drinking water and wastewater.1 The EPA has given these industries time to switch to other materials by setting deadlines. Syeda Khaula Saad, Verywell Health, 22 Mar. 2024 Today's aerosol oven cleaners are often made with lye, or sodium hydroxide. Kimberly Holland, Southern Living, 12 Nov. 2023 Cleaners that contain sodium hydroxide or potassium hydroxide are even worse. Jeanne Huber, Washington Post, 15 Dec. 2023 Water will happily accept that electron, but at a cost: the reaction creates sodium hydroxide (NaOH) and hydrogen gas (H2). Phil Plait, Discover Magazine, 22 Feb. 2012 The important thing to keep running was the fan that pumped air through a canister of sodium hydroxide. Robert Kunzig, Discover Magazine, 11 Nov. 2019 Supposedly, gentler, no-lye relaxers (without sodium hydroxide that can cause chemical burns) are also available, but Lane says the propensity for damage is still high. Tayler Adigun, Allure, 4 Oct. 2023 According to the Pinellas County Sheriff, a hacker gained remote access to Oldsmar’s water-treatment-plant network and briefly increased the amount of sodium hydroxide in the water by 100 times—enough to cause death or serious injury to anyone who drank or touched it. Dave Weinstein, WSJ, 26 Feb. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sodium hydroxide.' 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

1885, in the meaning defined above

Time Traveler
The first known use of sodium hydroxide was in 1885

Dictionary Entries Near sodium hydroxide

Cite this Entry

“Sodium hydroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sodium%20hydroxide. Accessed 20 Apr. 2024.

Kids Definition

sodium hydroxide

noun
: a white brittle solid that is strongly alkaline and is used especially in making soap, rayon, and paper

Medical Definition

sodium hydroxide

noun
: a white brittle deliquescent solid NaOH that dissolves readily in water to form a strongly alkaline and caustic solution and that is used in pharmacy as an alkalizing agent

called also caustic soda

More from Merriam-Webster on sodium hydroxide

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