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What is propionic acid solution (CAS 79-09-4) used for?

Jan 20, 2026 Leave a message

What is propionic acid solution (CAS 79-09-4)?

Propionic acid is an organic acid composed of carbon, hydrogen, and oxygen. Its functional group is the carboxyl group (-COOH). The carboxyl group is composed of a carbonyl group (-C=O) and a hydroxyl group (-OH). The chemical formula of propionic acid is CH₃CH₂COOH. This acid is a colorless liquid at room temperature and has a strong, pungent odor similar to body odor.

 

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What is propionic acid solution (CAS 79-09-4) used for?

Propionic acid solution is a potent preservative widely used in both food and animal feed. For human foods like bread and cheese, it effectively inhibits mold growth to extend shelf life. 

 

Propionic acid is a key chemical intermediate used in a variety of industries. It is essential for the production of plastics such as cellulose acetate propionate, as well as herbicides, pharmaceuticals and dyes. In agriculture, it is used in fungicides and as a bee repellent during honey harvesting. In industry, it is used as a liquid that dissolves other substances, a substance that makes plastics more malleable, and an additive in paints, fabrics, and rubber goods, demonstrating considerable adaptability.

 

 

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