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What Is the Chemical Composition of Vinegar?

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Acetic acid is the primary acid in vinegar.

Acetic acid is the primary acid in vinegar.

Cacycle, Wikipedia Commons

Question: What Is the Chemical Composition of Vinegar?

Vinegar is a liquid that is produced from the fermentation of ethanol into acetic acid. The fermentation is carried out by bacteria.

Answer: Vinegar consists of acetic acid (CH3COOH), water and trace amounts of other chemicals, which may include flavorings. The concentration of the acetic acid is variable. Distilled vinegar contains 5-8% acetic acid. Spirit of vinegar is a stronger form of vinegar that contains 5-20% acetic acid.

Flavorings may include sweeteners, such as sugar or fruit juices. Infusions of herbs, spices and other flavors may be added, too.

 

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