Surf Wiki
Save to docs
general/potassium-compounds

From Surf Wiki (app.surf) — the open knowledge base

Potassium hydrogenoxalate

Chemical compound, salt of sorrel

Chemical compound, salt of sorrel

Potassium hydrogenoxalate is a salt with formula KHC2O4 or K+·HO2C-CO2−. It is one of the most common salts of the hydrogenoxalate anion, and can be obtained by reacting potassium hydroxide with oxalic acid in 1:1 mole ratio.

The salt is also known as: potassium hydrogen oxalate, potassium bioxalate, acid potassium oxalate, or monobasic potassium oxalate. In older literature, it was also called: Salt of sorrel, sorrel salt, sel d'oseille, sal acetosella; or, *inaccurately, '''salt of lemon''''' (due to the similar acidic “lemony” taste of the edible common sorrel or garden sorrel)

Potassium hydrogenoxalate occurs in some plants, notably sorrel. It is a commercial product used in photography, marble grinding, and removing ink stains.

Properties

The anhydrous product is a white, odorless, crystalline solid, hygroscopic and soluble in water (2.5 g/100 g at room temperature). The solutions are basic. Below 50 °C the much less soluble "potassium tetraoxalate" · forms and precipitates out of solution.

The monohydrate KHC2O4·H2O starts losing the water at 100 °C.

The anhydrous salt was found to have remarkable elastic anisotropy, due to its crystal structure that consists of relatively rigid columns of hydrogen-bonded hydrogenoxalate anions, joined into sheets by ionic K–O bonds.

Toxicity

Potassium hydrogenoxalate is strongly irritating to eyes, mucoses and gastrointestinal tract. It may cause cardiac failure and death.

References

References

  1. "Die Net Dictionary: "Salt of Sorrel"".
  2. "Selency: Old bottle at pharmacy—‘Salt of Sorrel".
  3. "Salt of Sorrel: labelled ‘sel d'oseille’".
  4. "''kitchn™'' It’s Fresh, Green, and Super Tangy: Sorrel Is In Season!".
  5. ChemicalBook (2007) [http://www.chemicalbook.com/ChemicalProductProperty_EN_CB1199602.htm ''Potassium binoxalate Product Description'']
  6. Mark Dugan (2009) [http://www.hummelcroton.com/msdspdf/kbox_m.pdf ''Potassium binoxalate'' product data sheet] Hummel Croton
  7. H. Koppers (1973), ''The Elastic Constants of Monoclinic Potassium Hydrogen Oxalate'' Acta Crystallographica,volume A29, p. 415
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

potassium-compounds oxalates
Want to explore this topic further?

Ask Mako anything about Potassium hydrogenoxalate — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report