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(organic chemistry)
Salt of oxalic acid; contains the (COO)2 radical; examples are sodium oxalate, Na2C2O4, ammonium oxalate, (NH4)2C2O4·H2O, and ethyl oxalate, C2H5(C2O4)C2H5.



any acidic or neutral salt of oxalic acid, for example, HOOC—COOK and NaOOC—COONa.

References in periodicals archive ?
Dietary calcium helps limit your body's absorption of oxalate, and low dietary calcium has been found to increase the risk of calcium oxalate stones.
The doctor will also order tests to look for unusual levels of chemicals such as calcium, oxalate, magnesium, and sodium in the blood and urine to help design a prevention strategy.
Unfortunately, none of the calcium in spinach or other high-oxalate plants is bioavailable, since it is strongly bound to oxalates.
The Vegetarian Resource Group sometimes receives questions about the oxalate content of vegan foods.
Increased risk is seen when there is low urine volume, consumption of foods rich in oxalate and or uric acid, excessive consumption of animal protein and sodium and high acidic pH of foods.
Though hot tea also contains oxalate, it's hard to drink enough to cause kidney stones, Milner said.
Crystals encountered within the tissue samples included MCC (3 cases of intravenous drug abuse), crystals consistent with talc (2 cases of intravenous drug abuse, 1 case of talc pleurodesis), mixed silicates (1 case of suspected silicate pneumoconiosis in a rubber worker), and calcium oxalate (1 case of aspergillosis from Aspergillus niger), which were respectively evaluated with the MMPS using routine light microscopy.
In the case of calcium oxalates, the diversity of crystal shapes and sizes, as well as their prevalence and spatial distribution, have led to a number of hypothesis on this aspect, including calcium homeostasis mechanisms, tissue support, plant protection, detoxification and even, light gathering and reflection.
Because oxalic acid forms strong mineral bonds that can become calcium oxalate crystals and eventually CaOx stones, Bean speculated that low-oxalate foods might help prevent the stones' formation (see "Oxalates in food," page 9), and she made those ingredients the foundation of her dogs' menus.
In the recent study, 13 commercial soy foods contained between 16 and 638 mg of total oxalates per serving.