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CAS: 57-11-4
EINECS: 200-313-4
Stearic acid, with the formula C18H36O2, is a saturated fatty acid found in fats and oils. In a solid and white state, it is insoluble in water but soluble in organic solvents. Endowed with emollient properties, it is commonly used in cosmetic products to impart consistency and smoothness. Additionally, it plays a crucial role in the stability and texture of creams and lotions. CAS: 57-11-4. EINECS: 200-313-4. INCI: STEARIC ACID.
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What is Stearic Acid

Definition and Origin

Stearic acid is a saturated fatty acid commonly found in animal and vegetable fats. Its name comes from the Greek word "stear," which means tallow. It is a key component in the manufacturing of various products due to its unique properties.

Obtaining process

Stearic acid is obtained through the hydrogenation of vegetable and animal fats. This process involves adding hydrogen to unsaturated fats, converting them into saturated fatty acids. The stearic acid is then separated and purified for use in different applications.

Properties of Stearic Acid

Chemical composition

Stearic acid has the chemical formula C18H36O2. It is a saturated fatty acid composed of a chain of 18 carbon atoms, which gives it stability and resistance to oxidation.

Physical Properties

Stearic acid is solid at room temperature, with a melting point of approximately 69-70°C. Its texture is waxy and white, making it ideal for use in products that require consistency and stability.

Chemical properties

Chemically, stearic acid is stable and does not oxidize easily. It is compatible with a wide range of other ingredients, making it a versatile component in chemical and cosmetic formulations.

Benefits of Stearic Acid

Health benefits

Stearic acid, when consumed in small amounts as part of a balanced diet, can help provide energy and support cellular functions. However, its main value lies in its external applications, especially in cosmetics and personal care.

Benefits in the Cosmetic Industry

In cosmetics, stearic acid is used for its emulsifying and stabilizing properties. Helps thicken and solidify formulations, improving the texture and applicability of products such as creams, lotions and soaps.

Benefits in the Food Industry

Although its use in the food industry is limited, stearic acid can be found in the manufacture of certain processed foods as a hardening and stabilizing agent.

Uses of Stearic Acid

Cosmetic Uses

Stearic acid is a key ingredient in the manufacture of cosmetic products such as creams, lotions, lip balms and hair care products. Its emulsifying properties help mix ingredients that would not normally combine, such as oil and water.

Industrial Uses

In industry, stearic acid is used in the manufacture of candles, soaps and detergents. Its ability to harden and stabilize makes it ideal for these products. It is also used in the production of lubricants and mold release agents.

Uses in Plastic Production

Stearic acid is used as a plasticizer and stabilizer in the manufacture of plastics and rubber. It helps improve the flexibility and durability of these materials, making them more manageable during the production process.

How to Buy Stearic Acid Wholesale

Advantages of Buying Wholesale

Purchasing stearic acid wholesale offers numerous advantages, including lower volume pricing, consistent product availability, and the ability to customize orders to specific customer needs.

Why Choose Royalbio

Product quality

RoyalbioIt is distinguished by the high quality of its products. The stearic acid offered is carefully manufactured and subjected to strict quality controls to ensure its purity and effectiveness.

Certifications and Recognitions

RoyalbioIt has multiple certifications that guarantee the safety and quality of its products. These certifications include international standards that ensure that stearic acid is safe and of high quality.

Products Related to Stearic Acid

Soaps and Detergents

Hestearic acidIt is a key ingredient in the manufacture of soaps and detergents. It helps improve the consistency and cleaning ability of these products, making them more effective and enjoyable to use.


In candle production, stearic acid is used to harden the wax and improve flame quality. This results in candles that burn more evenly and have greater durability.


Stearic acid is found in a wide variety of cosmetic products, from moisturizers to hair care products. Its ability to emulsify and stabilize makes it indispensable in these formulations.

Frequent questions

What is stearic acid and what is it used for?

Stearic acid is a saturated fatty acid used in the manufacture of cosmetic products, soaps, candles, and plastics due to its emulsifying and stabilizing properties.

Is stearic acid safe for skin?

Yes, stearic acid is safe for skin and is commonly used in cosmetic and personal care products for its moisturizing and emollient properties.

How is stearic acid preserved?

Stearic acid should be stored in a cool, dry place, away from direct light and heat sources, to maintain its quality and stability.

Is stearic acid of plant or animal origin?

Stearic acid can be of plant origin