acetic acid amaranth ascorbic acid aspergillus bean beekeeper beet berry black pepper buckwheat cas registry number calcium oxalate camellia sinensis carambola carbon monoxide casein chard chemical compound chemical formula chocolate cocoa density dicarboxylic acid digital object identifier disodium oxalate ethylene glycol flash point glycolic acid gout insecticide international union of pure and applied chemistry nomenclature iodine kidney kidney stone ligand melting point molar mass mordant nephrotoxicity nitric acid organic acid oxalate oxaliplatin oxalis oxalyl chloride parsley plant platinum poppy potassium ferrioxalate potassium permanganate reducing agent rheumatoid arthritis rhubarb rust simplified molecular input line entry specification sodium hydroxide solubility sorrel spinach sucrose tea titration varroa destructor vitamin c vulvodynia water water of crystallization weak acid wikimedia commons