Lithium oxalate
Lithium oxalate
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Lithium oxalate

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Lithium oxalate

Lithium oxalate is an organic compound with the chemical formula Li2C2O4. It is a salt of lithium metal and oxalic acid. It consists of lithium cations Li+ and oxalate anions C2O2−4. Lithium oxalate is soluble in water and converts to lithium oxide when heated.

One of the methods of synthesis is the reaction of direct neutralization of oxalic acid with lithium hydroxide:

The compound crystallizes in the monoclinic system, cell parameters a = 3.400 Å, b = 5.156 Å, c = 9.055 Å, β = 95.60°, Z = 4.

Lithium oxalate decomposes when heated at 410–500 °C (770–932 °F; 683–773 K):

In pyrotechnics, the compound is used to color the flame red.

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