Stearin

Stearin

Stearin in its solid form

Stearin is a triglyceride derived from three molecules of stearic acid and one molecule of glycerol. It is a common component of animal and vegetable fats, and it is used in the production of candles, soaps, and cosmetics.

Chemical Structure

Stearin is chemically classified as a triglyceride, which means it is an ester derived from glycerol and three fatty acids. The fatty acids in stearin are primarily stearic acid, a saturated fatty acid with an 18-carbon chain. The chemical formula for stearin is C__H___O_.

Physical Properties

Stearin is a solid at room temperature, with a melting point of approximately 69.3 °C (156.7 °F). It is white and odorless, making it suitable for use in products where color and scent are important factors. Stearin is insoluble in water but soluble in organic solvents such as ethanol and benzene.

Uses

Candle Making

Stearin is used in candle making

Stearin is widely used in the production of candles due to its ability to harden paraffin wax and improve the burning qualities of the candle. It helps to increase the melting point of the wax, making the candle more durable and less likely to deform in warm conditions.

Soap Production

In the soap industry, stearin is used as a hardening agent. It contributes to the hardness and opacity of the soap, as well as its ability to produce a stable lather. Stearin is often combined with other fats and oils to create a balanced soap formula.

Cosmetics

Stearin is also used in the cosmetics industry as an emulsifying agent. It helps to stabilize emulsions, which are mixtures of oil and water, in products such as creams and lotions.

Related Compounds

Stearin is closely related to other triglycerides such as palmitin and olein, which are derived from palmitic acid and oleic acid, respectively. These compounds share similar properties and uses but differ in their fatty acid composition.

Related Pages

• Stearic acid
• Triglyceride
• Candle
• Soap
• Cosmetic