oxalic acid

noun
ox·​al·​ic acid | \ (ˌ)äk-ˈsa-lik- How to pronounce oxalic acid (audio) \

Definition of oxalic acid

: a poisonous strong acid (COOH)2 or H2C2O4 that occurs in various plants (such as spinach) as oxalates and is used especially as a bleaching or cleaning agent and as a chemical intermediate

Examples of oxalic acid in a Sentence

Recent Examples on the Web The stalks are edible but the leaves contain high amounts of oxalic acid and are consequently toxic. Bill St. John, The Denver Post, "Get Cooking: A savory way with rhubarb," 13 June 2020 Rhubarb is another excellent copper cleaner, thanks to its oxalic acid content, Dahmen says. Katherine Martinelli, Popular Science, "The key to cleaning copper cookware is probably in your fridge," 24 Jan. 2020 One note of caution: People with kidney problems should avoid star fruit because of its high levels of oxalic acid. Sandee Lamotte, CNN, "Top 34 bestselling 'fruit' drinks for kids deemed unhealthy," 16 Oct. 2019 Bar Keepers Friend contains oxalic acid, which breaks down mineral deposits and other grime. Washington Post, "The solution for stubborn dirt on porcelain tile? These products, and elbow grease.," 15 July 2019 Its sour taste comes from oxalic acid, which also gives rhubarb its tartness. Susan Barocas, sun-sentinel.com, "Why cold soups are really Jewish," 17 July 2019 Both sorrel and spinach also contain small, edible amounts of oxalic acid. Terri Milligan, Milwaukee Journal Sentinel, "Are you a ’barbarian? Let rhubarb’s tart-sweet flavor shine in more than pie," 13 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'oxalic acid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of oxalic acid

1788, in the meaning defined above

History and Etymology for oxalic acid

French (acide) oxalique, from Latin oxalis

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Time Traveler for oxalic acid

Time Traveler

The first known use of oxalic acid was in 1788

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Statistics for oxalic acid

Last Updated

13 Aug 2020

Cite this Entry

“Oxalic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oxalic%20acid. Accessed 19 Sep. 2020.

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More Definitions for oxalic acid

oxalic acid

noun
ox·​al·​ic acid | \ (ˌ)äk-ˌsal-ik- How to pronounce oxalic acid (audio) \

Medical Definition of oxalic acid

: a poisonous strong acid (COOH)2 or H2C2O4 that occurs in various plants as oxalates and is used especially as a bleaching or cleaning agent and as a chemical intermediate

More from Merriam-Webster on oxalic acid

Britannica.com: Encyclopedia article about oxalic acid

Comments on oxalic acid

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