Propionic acid
Propionic acid (also known as propanoic acid) is a naturally occurring carboxylic acid with chemical formula CH3CH2COOH. It is a clear liquid with a pungent odor and is produced industrially on a large scale for use in various applications, including food preservation and the production of various materials.
Production[edit]
Propionic acid is produced industrially through the hydrocarboxylation of ethylene using nickel carbonyl as the catalyst: H2C=CH2 + H2O + CO → CH3CH2COOH It can also be formed by the bacterial fermentation of sugars or by the oxidation of propionaldehyde.
Applications[edit]
Propionic acid is used in a variety of applications. It is used as a preservative in food and feed, as it inhibits the growth of mold and some bacteria. It is also used in the production of polymers, pharmaceuticals, and perfumes.
Health effects[edit]
Exposure to propionic acid can cause irritation to the skin, eyes, and respiratory tract. Ingestion can lead to gastrointestinal discomfort.
Propionic acid images[edit]
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Industrial synthesis of propionic acid (hydrocarboxylation process) -
Industrial synthesis of propionic acid (oxidation process)
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See also[edit]
References[edit]
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