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Oxalic acid's main applications include cleaning or bleaching, especially for the removal of rust (iron complexing agent). Its utility in rust removal agents is due to its forming a stable, water-soluble salt with ferric iron, ferrioxalate ion. Oxalic acid is an ingredient in some tooth whitening products.
[citation needed] Leaves of the tea plant (Camellia sinensis) contain among the greatest measured concentrations of oxalic acid relative to other plants. However, the drink derived by infusion in hot water typically contains only low to moderate amounts of oxalic acid due to the small mass of leaves used for brewing. [citation needed]
Without the need to use milling to reduce phytate (including nutrient), [4] the amount of phytic acid is commonly reduced in animal feeds by adding histidine acid phosphate type of phytases to them. [5] Oxalic acid and oxalates are present in many plants and in significant amounts particularly in rhubarb, tea, spinach, parsley, and purslane.
Betulinic acid Ber tree, white birch, winged beans, tropical carnivorous plants Triphyophyllum peltatum, Ancistrocladus heyneanus, Diospyros leucomelas a member of the persimmon family, Tetracera boiviniana, the jambul (Syzygium formosanum), chaga (Inonotus obliquus), and many other Syzygium species.
Vitamin C (ascorbic acid) is a water-soluble compound that fulfills several roles in living systems. Sources include citrus fruits (such as oranges , sweet lime , etc.), green peppers , broccoli , green leafy vegetables , black currants , strawberries , blueberries , seabuckthorn , raw cabbage and tomatoes .
2015, April – Contaminated milk tea resulted in the deaths of two individuals and affected another [83] in Sampaloc, Manila, [84] [85] the cause of which was determined to have been oxalic acid being deliberately laced at more than the lethal oral dose. [86] [87]
Ginger tea: The nausea reliever. Ginger tea has long been used as a natural way to relieve nausea. Made by steeping fresh or dried ginger in hot water, ginger tea is caffeine-free like other ...
It can also be prepared by treating oxalic acid with phosphorus pentachloride. [6] [7] Oxalyl chloride is produced commercially from ethylene carbonate. Photochlorination gives the perchloroethylene carbonate C 2 Cl 4 O 2 CO and hydrogen chloride HCl, which is subsequently degraded to oxalyl chloride and phosgene COCl 2: [8] C 2 H 4 O 2 CO + 4 ...