Product Notes
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Reactions typical for carboxylic acids apply also to benzoic acid. Benzoate esters are the product of the acid catalysed reaction with alcohols. Benzoic acid amides are usually prepared from benzoyl chloride. Dehydration to benzoic anhydride is induced with acetic anhydride or phosphorus pentoxide.
Benzoic acid is most commonly found in industrial settings to manufacture a wide variety of products such as perfumes, dyes, topical medications and insect repellents. Benzoic acid's salt (sodium benzoate) is commonly used as a pH adjustor and preservative in food, preventing the growth of microbes to keep food safe.
It may also convert to benzene, a potential carcinogen, but the low levels found in beverages are deemed safe.
