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 To compare this new treatment to oxalic acid, a common chemical used by small-scale beekeepers, the researchers then treated 30 colonies with either the acid or the fungus. Erik Stokstad, Science | AAAS, 4 June 2021 For windows and shower doors, McDermott suggests gently buffing the stains with a rag and an oxalic acid cleanser, such as Bar Keepers Friend ($7.85, Amazon). Washington Post, 10 June 2021 Bees can fall sick or die if concentrations of oxalic acid are too high, and other chemical miticides can cause reproductive problems in the pollinators. Erik Stokstad, Science | AAAS, 4 June 2021 Dissolving them in salt water or ammonium sulfate solutions, and then precipitating them out with oxalic acid or ammonium bicarbonate – inexpensive chemicals – does the trick. Willy Shih, Forbes, 24 Feb. 2021 The stalks are edible but the leaves contain high amounts of oxalic acid and are consequently toxic. Bill St. John, The Denver Post, 13 June 2020 Rhubarb is another excellent copper cleaner, thanks to its oxalic acid content, Dahmen says. Katherine Martinelli, Popular Science, 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, 16 Oct. 2019 Bar Keepers Friend contains oxalic acid, which breaks down mineral deposits and other grime. Washington Post, 15 July 2019

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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Dictionary Entries Near oxalic acid

oxaldehyde

oxalic acid

Oxalidaceae

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Statistics for oxalic acid

Last Updated

14 Aug 2021

Cite this Entry

“Oxalic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oxalic%20acid. Accessed 25 Sep. 2021.

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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

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