F

Fatty Acids

CH₃(CH₂)ₙCOOH
Quick Reference
Formula / NotationCH₃(CH₂)ₙCOOH
Also Known AsLong-chain carboxylic acid, lipid acid, carboxylic acid chain

What is Fatty Acids?

Fatty acids are long-chain carboxylic acids derived from or contained in animal or vegetable fats. They consist of a hydrocarbon chain with a carboxyl group (–COOH) at one end. Saturated fatty acids have only single bonds; unsaturated fatty acids contain one or more double bonds. They are key components of lipids and cell membranes.

Formula & Notation

CH₃(CH₂)ₙCOOH

Other Names / Synonyms: Long-chain carboxylic acid, lipid acid, carboxylic acid chain

Properties & Characteristics

General formula: CₙH₂ₙ₊₁COOH (saturated). Carbon chain length: typically C4–C24. Saturated (palmitic C16, stearic C18): solid, higher melting point. Monounsaturated (oleic C18:1): liquid at room temperature. Polyunsaturated (linoleic C18:2, linolenic C18:3): liquid, lower melting point. pKa ≈ 4.5–5.

Uses & Applications

Biological energy source (β-oxidation). Cell membrane phospholipid components. Soap and detergent manufacture (sodium/potassium salts). Food additives and emulsifiers. Biodiesel production. Pharmaceutical excipients. Cosmetics and skin care products.

Safety Information

Generally low acute toxicity. Rancidity products (aldehydes, ketones) may be toxic. Some fatty acids are allergens. Industrial processing may involve high temperatures creating fire hazards. Handle rancid fats with caution.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Fatty Acids
Formula CH₃(CH₂)ₙCOOH
Synonyms Long-chain carboxylic acid, lipid acid, carboxylic acid chain

Frequently Asked Questions

Fatty acids are long-chain carboxylic acids derived from or contained in animal or vegetable fats. They consist of a hydrocarbon chain with a carboxyl group (–COOH) at one end. Saturated fatty acids have only single bonds; unsaturated fatty acids contain one or more double bonds. They are key components of lipids and cell membranes.

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