Stearic Acid丨CAS 57-11-4

Stearic acid丨57-11-4 is a saturated fatty acid commonly found in animal fats and vegetable oils. It is one of the most abundant long-chain fatty acids, consisting of an 18-carbon chain with a carboxyl group (-COOH). Stearic acid is widely used in various industries, including cosmetics, pharmaceuticals, and food, due to its versatile properties as a surfactant, emulsifier, stabilizer, and lubricant.

1. Cosmetics and Personal Care Products
● Emulsifier and Stabilizer: Stearic acid丨57-11-4 is commonly used as an emulsifier in products like lotions, creams, and cosmetics. It helps in the formation and stabilization of emulsions by allowing oil and water-based ingredients to blend together.
● Thickening Agent: It is often used as a thickener in formulations like shampoos, soaps, and conditioners, providing the desired consistency.
● Skin Condition: Due to its moisturizing properties, it helps keep the skin hydrated and soft by acting as a moisture barrier.
2. Food Industry
● Food Additive: Stearic acid is used in the food industry as an emulsifier, particularly in margarines, baked goods, and chocolate. It prevents ingredients from separating and improves the texture and mouthfeel of the product.
● Coating Agent: In some cases, stearic acid is used as a coating agent for candies, nuts, and other food products to improve appearance and reduce stickiness.
3. Pharmaceuticals
● Excipients in Tablets and Capsules: In the pharmaceutical industry, stearic acid is used as an excipient in the manufacture of tablets and capsules. It helps in the lubrication of tablet presses and aids in the easy release of the tablets from molds.
● Drug Delivery: Stearic acid and its derivatives are often used in the production of controlled-release and lipid-based drug delivery systems. It can enhance the solubility and bioavailability of certain hydrophobic drugs.
4. Industrial Applications
● Lubricants and Greases: Stearic acid is used as a lubricant and stabilizer in the production of greases, plasticizers, and rubber products. It reduces friction and wear in various mechanical processes.
● Surfactants: It is a key ingredient in the manufacturing of detergents and other cleaning agents, where it serves as a surfactant that lowers surface tension and improves cleaning efficacy.
● Manufacturing of Candles: Stearic acid is used in the production of candles, as it helps in improving texture, hardness, and burning properties.
5. Animal Feed
● Feed Additive: Stearic acid is sometimes added to animal feed as a source of energy and to improve the texture and palatability of the feed.
6. Manufacturing of Soaps and Detergents
● Soap Production: Stearic acid is commonly used in soap-making as it reacts with alkali to produce soap and glycerin. It contributes to the soap's hardness and lathering properties.

Versatile Emulsifier – Widely used in the cosmetics and food industries to stabilize emulsions and improve texture.
Skin Care – Provides moisturizing and protective benefits in lotions, creams, and other personal care products.
Safe and Non-Toxic – Generally regarded as safe for use in food, cosmetics, and pharmaceuticals, making it suitable for a wide range of applications.
Sustainable and Biodegradable – Derived from both animal and vegetable sources, stearic acid is considered biodegradable and environmentally friendly.
Industrial Use – Helps reduce friction and improve the performance of lubricants and plastics.
Energy Source in Animal Feed – Provides energy and enhances palatability in livestock feed.

Stearic acid丨57-11-4 is an essential fatty acid with a broad range of applications, from cosmetics and pharmaceuticals to food and industrial processes. Its versatility as an emulsifier, lubricant, and thickening agent, combined with its safety and biodegradability, make it a valuable ingredient in various consumer and industrial products. Its use across diverse sectors highlights its important role in modern manufacturing and product formulation.