It is a synthetic compound commonly produced by reaction acetic acid with calcium hydroxide (limestone) or calcium carbonate (hydrated lime).

The following are two manufacturing methods:

Neutralization acetic acid with calcium hydroxide. Equation: 2CH3COOH + Ca(OH)2/CaCO3 → (CH3COO)2Ca + 2H2O
An exothermic reaction between calcium oxide and glacial acetic acid. Equation: 2CH3COOH + CaO → (CH3COO)2Ca + H2O

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