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Oxalate (systematic IUPAC name: ethanedioate) is an anion with the chemical formula C 2 O 2− 4. This dianion is colorless. It occurs naturally, including in some foods. It forms a variety of salts, for example sodium oxalate (Na 2 C 2 O 4), and several esters such as dimethyl oxalate ((CH 3) 2 C 2 O 4). It is a conjugate base of oxalic acid.
Sodium oxalate, or disodium oxalate, is a chemical compound with the chemical formula Na 2 C 2 O 4. It is the sodium salt of oxalic acid. It contains sodium cations Na + and oxalate anions C 2 O 2− 4. It is a white, crystalline, odorless solid, that decomposes above 290 °C. [2]
Tin(II) oxalate is an inorganic compound, a salt of tin and oxalic acid with the chemical formula SnC 2 O 4. [2] The compound looks like colorless crystals, does not dissolve in water, and forms crystalline hydrates.
Calcium oxalate (in archaic terminology, oxalate of lime) is a calcium salt of oxalic acid with the chemical formula CaC 2 O 4 or Ca(COO) 2. It forms hydrates CaC 2 O 4 · n H 2 O , where n varies from 1 to 3.
Ammonium oxalate is a chemical compound with the chemical formula [N H 4] 2 C 2 O 4.Its formula is often written as (NH 4) 2 C 2 O 4 or (COONH 4) 2.It is an ammonium salt of oxalic acid.It consists of ammonium cations ([NH 4] +) and oxalate anions (C 2 O 2− 4).
Like other iron oxalates, ferrous oxalates feature octahedral Fe centers. The dihydrate FeC 2 O 4 (H 2 O) x is a coordination polymer, consisting of chains of oxalate-bridged ferrous centers, each with two aquo ligands. [3] When heated to 120 °C, the dihydrate dehydrates, and the anhydrous ferrous oxalate decomposes near 190 °C. [4]
An oxalate nitrate is a chemical compound or salt that contains oxalate and nitrate anions (NO 3-and C 2 O 4 2-). These are mixed anion compounds. Some have third ...
An oxalate chloride or oxalato chloride is a mixed anion compound contains both oxalate and chloride anions. Related compounds include oxalate fluorides [1] ...