Science Investigatory

Topics: Calcium oxalate, Kidney stone, Araceae Pages: 4 (951 words) Published: June 23, 2013
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Calcium oxalate
From Wikipedia, the free encyclopedia
Calcium oxalate|
|
IUPAC name[hide]calcium ethanedioate|
Identifiers|
CAS number| 25454-23-3 , (anhydrous)
5794-28-5 (monohydrate)|
PubChem| 16212978|
ChemSpider| 30549 |
ChEBI| CHEBI:60579 |
Jmol-3D images| Image 1|
SMILES[show]|
InChI[show]|
Properties|
Molecular formula| CaC2O4|
Molar mass| 128.097 g/mol, anhydrous
146.112 g/mol, monohydrate|
Appearance| white solid|
Density| 2.12 g/cm3, anhydrous
2.12 g/cm3, monohydrate|
Melting point| 200 °C, decomposes (monohydrate)|
Solubility inwater| 6.7 mg/L (20 °C)|
Related compounds|
Other cations| Beryllium oxalate
Magnesium oxalate
Strontium oxalate
Barium oxalate
Radium oxalate|
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)| Infobox references|
Calcium oxalate (in archaic terminology, oxalate of lime) is a chemical compound that forms envelope-shaped crystals, known in plants as raphides. A major constituent of human kidney stones, the chemical is also found in beerstone, a scale that forms on containers used in breweries. Its chemical formula is CaC2O4 or Ca (COO)2. Contents  [hide]  * 1 Occurrence * 2 Morphology * 3 Effects of ingestion * 3.1 Treatment * 4 Applications * 5 References * 6 See also| -------------------------------------------------

Occurrence[edit]
Many plants accumulate calcium oxalate as it has been reported in over 1000 different genera of plants.[1] The calcium oxalate accumulation is linked to the detoxification of calcium (Ca2+) in the plant.[2] Calcium oxalate is a poisonous substance that can produce sores and numbing on ingestion and could even be fatal. The poisonous plant dumb cane (Dieffenbachia) contains the substance and on ingestion can prevent speech and be suffocating. It is also found...

References: edit]
1. ^ Francesci, V.R.; Nakata (2005). "Calcium oxalate in plants: formation and function.". Annu Rev Plant Biol (56): 41–71.
2. ^ Martin, G; Matteo Guggiari, Daniel Bravo, Jakob Zopfi, Guillaume Cailleau, Michel Aragno, Daniel Job, Eric Verrecchia and Pilar Junier (2012). "Fungi, bacteria and soil pH: the oxalate–carbonate pathway as a model for metabolic interaction". Environmental Microbiology14 (11): 2960–2970.
3. ^ Johnson, Dana (23 March 1998). "Removing Beerstone". Modern Brewery Age. Birko Corporation R&D. Retrieved 2007-08-06.
4. ^ "Clinical Pathology of Ethylene Glycol Toxicosis". Archived from the original on 2 May 2012. Retrieved 2012-05-17..
5. ^ Outbreak of Food-borne Illness Associated with Plant Material Containing Raphides. Informa Healthcare.
6. ^ "CALCIUM OXALATE HUMMEL CROTON". Hummel Croton Inc. Retrieved 2012-05-02.
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