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What are the uses of propionic acid (C3h6o2 CAS 79-09-4)?

Jan 21, 2026 Leave a message

CAS 79-09-4 Propionic acid is a simple, saturated short-chain fatty acid. Basically, it has a three-carbon chain with a carboxylic acid group at one end. That straightforward structure gives it some pretty interesting properties-like being highly soluble in water and having a relatively low boiling point. Because of these features, it's actually pretty useful in a bunch of industrial applications.

 

Liquid Propionic Acid

 

What are the uses of propionic acid (C3h6o2 CAS 79-09-4)?

1. Food and agriculture uses:
Propionic acid (CAS 79-09-4) is commonly used as a mould inhibitor and preservative. It is effective in animal feed such as hay, silage and grains, as well as in human foods such as bread and cheese. It effectively prevents spoilage and extends the shelf life of these products. It can also be added to livestock drinking water to combat bacteria and fungi. It can also be used to sanitise surfaces in grain storage facilities. In some processed foods and artificial flavours, it serves as a minor flavouring ingredient.

 

2. Industrial and chemical applications

Propionic acid (CAS 79-09-4) is a key chemical intermediate and basic material for producing plastics, coatings, pharmaceuticals and perfumes. Its antimicrobial properties also make it suitable for producing herbicides and fungicides. In the textile industry, it is used to manufacture cellulose acetate propionate fibres. It is also often added to nickel electroplating solutions to improve the plating effect and plays an important role in the electroplating process.

 

3. Other practical uses

Propionic acid (CAS 79-09-4) has many unexpected applications. For example, it can be used as a bee repellent to help beekeepers harvest honey more easily. In cosmetics, it helps to maintain the skin's pH balance, which is beneficial for skin health.

 

 

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 Propionic Acid C3h6o2

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