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What is the chemical formula for malic acid?

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Quick Answer

The chemical formula for malic acid is C4H6O5. Malic acid is part of the alpha hydroxy acid family and is naturally found in apples and other fruits. It is described as odorless, tart and sour.

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Malic acid at low concentrations is often used as a food additive, particularly in diet sodas and candies that require artificial sweeteners. The acid is also available as a supplement. According to WebMD, oral supplements of malic acid may be used for symptomatic treatment of fibromyalgia. Low amounts of malic acid are used to balance pH and aid exfoliation in certain skin lotions. Exposure to more concentrated malic acid may cause skin irritation.

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