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Sodium stearate is the sodium salt of stearic acid, a fatty acid commonly derived from animal or vegetable sources.
It is one of the most widely used surfactants and emulsifying agents in personal care, pharmaceutical, and industrial formulations.
Sodium stearate is primarily known for its cleansing, thickening, and stabilizing properties and is valued for its role in soap manufacturing and cosmetic product formulation.
CAS Number: 822-16-2
EC Number: 212-490-5
Molecular Formula: C₁₈H₃₅NaO₂
Molecular Weight: 306.46 g/mol
Synonyms: Sodium Stearate, Octadecanoic Acid, Sodium Salt, Sodium Salt of Stearic Acid, Stearic Acid Sodium Salt, Soap Base Sodium Stearate, Sodium Octadecanoate, Anionic Emulsifier Sodium Stearate
APPLICATIONS
Sodium stearate is widely used in the production of bar soaps and cleansing products for its excellent foaming and cleansing properties.
Sodium stearate is included in deodorants and antiperspirants as a thickening and structuring agent.
Sodium stearate is employed in shaving soaps and creams to provide lather, slip, and enhanced skin comfort.
Sodium stearate is utilized in cosmetic creams and lotions as a co-emulsifier and stabilizer.
Sodium stearate is found in hair care products such as shampoos and styling gels for viscosity control.
Sodium stearate is used in bath bombs and solid cleansing bars for structural integrity and cleansing effect.
Sodium stearate is included in pharmaceutical ointments and topical formulations as a dispersant and emulsifier.
Sodium stearate is applied in food-grade formulations (with specific purity grades) as a release agent and emulsifier.
Sodium stearate is used in plastic and rubber processing as a lubricant and mold release agent.
Sodium stearate is utilized in coatings and paint formulations to improve rheological properties.
Sodium stearate is employed in waxes, polishes, and textile treatments as a surfactant and consistency modifier.
Sodium stearate is used in paper manufacturing as a sizing agent and coating additive.
Sodium Stearate is widely used in the cosmetic and personal care industry as a surfactant and emulsifier in soaps, where it helps to stabilize the soap mixture and contributes to the smooth texture and hardness of the bar.
Sodium Stearate is employed in the production of shampoos and conditioners, where it helps to improve lathering, enhance the cleaning properties, and stabilize the emulsions.
Sodium Stearate is used in the formulation of lotions and creams, where it helps emulsify oil and water-based ingredients, providing a smooth, uniform texture.
Sodium Stearate is used in the manufacturing of candles, where it is combined with other ingredients to create a firm, smooth texture and improve the burn quality of the candles.
Sodium Stearate is used in the production of detergents, where it acts as a surfactant and emulsifier, helping to improve the dispersion of grease and oils while cleaning.
Sodium Stearate is used in the formulation of antiperspirants and deodorants, where it acts as a thickening agent and helps stabilize the formula while providing smooth application.
Sodium Stearate is used in the formulation of cosmetics such as foundation, where it helps to thicken and stabilize the product while ensuring smooth application and consistency.
Sodium Stearate is used in the preparation of lubricants, where it helps reduce friction and wear by providing a smooth, lubricating layer in industrial machinery and other applications.
Sodium Stearate is employed in the production of rubber, where it helps improve the processing of rubber materials by acting as a lubricant and release agent.
Sodium Stearate is used in the preparation of food products as a stabilizer and emulsifier, especially in processed foods like margarine, where it helps improve texture and consistency.
Sodium Stearate is used in the production of paints and coatings, where it helps stabilize the emulsion and improves the spreadability and consistency of the product.
Sodium Stearate is employed in the formulation of plasticizers, where it helps improve the flexibility, workability, and processing of various plastics.
Sodium Stearate is used in the production of specialty soaps, such as those used in medical or industrial applications, where it enhances the effectiveness and texture of the soap.
Sodium Stearate is used in the production of emollients and skin care products, where it provides moisturization and helps form a protective barrier on the skin.
Sodium Stearate is used in the preparation of cleaning products, where it helps to emulsify and disperse oils and grease for easier removal during cleaning.
Sodium Stearate is applied in the production of cement and concrete products, where it helps improve the texture and workability of the mixture, contributing to the overall strength and performance of the material.
Sodium Stearate is used in the preparation of pharmaceuticals, where it acts as a binder and stabilizer in tablet formulations and other solid dosage forms.
Sodium Stearate is used in the manufacture of waterproofing agents, where it helps improve the water resistance of surfaces and materials.
Sodium Stearate is employed in the production of anti-corrosive coatings, where it helps form a protective barrier on metals and other surfaces, preventing rust and corrosion.
Sodium Stearate is used in the manufacture of deodorizing agents, where it helps disperse and neutralize odors, improving the effectiveness of the product.
Sodium Stearate is used in the formulation of hair styling products, such as gels and waxes, where it helps to provide structure, texture, and hold.
Sodium Stearate is used in the production of textile finishes, where it helps improve the softness and smoothness of fabrics during the finishing process.
Sodium Stearate is employed in the preparation of plastic films and coatings, where it enhances the smoothness and flexibility of the final product.
Sodium Stearate is used in the production of nonwoven fabrics, where it helps improve the texture, strength, and processing of the fabric during manufacturing.
Sodium Stearate is used in the formulation of specialty adhesives, where it helps improve adhesion, spreadability, and bond strength in both industrial and consumer products.
DESCRIPTION
Sodium stearate appears as a fine white powder or granule with a faint fatty odor.
It is an anionic surfactant that dissolves in water to form a viscous, foaming solution, making it ideal for cleansing formulations.
Sodium stearate is derived from stearic acid neutralized with sodium hydroxide and is available in both natural and synthetic forms.
Sodium stearate functions as a stabilizer and thickener in emulsions, enhancing product viscosity and texture.
It offers excellent foaming properties in aqueous systems, contributing to the performance of soaps and personal care products.
Sodium stearate forms transparent gels in ethanol and alcohol-based systems, making it suitable for solid stick formulations.
Sodium stearate provides excellent dispersibility in water-based systems and is compatible with a wide range of formulation ingredients.
It improves formulation shelf stability and offers a silky, smooth after-feel in topical applications.
Sodium stearate is biodegradable and widely accepted in natural and organic product lines.
Sodium Stearate is the sodium salt of stearic acid, a naturally occurring fatty acid, and is commonly used as an emulsifier, surfactant, and thickener in various industrial and personal care applications.
Sodium Stearate is a white, waxy solid that is soluble in water and alcohol but insoluble in most oils and organic solvents, making it effective in emulsifying oil and water mixtures.
Sodium Stearate is a widely used ingredient in soaps and cleansers, where it helps form lather and contributes to the hardness and texture of soap bars.
Sodium Stearate is used in the cosmetic industry for its ability to stabilize emulsions, making it ideal for use in lotions, creams, and other skin care products.
Sodium Stearate is a mild, non-toxic compound that is biodegradable, making it a suitable ingredient for sustainable and eco-friendly formulations.
Sodium Stearate acts as a lubricant and processing aid in industrial applications, where it improves the flowability and workability of materials like rubber, plastic, and metal.
Sodium Stearate is a versatile ingredient that works in a variety of formulations, helping to improve texture, consistency, and product performance across different industries.
Sodium Stearate is widely used in pharmaceutical formulations as a binder and stabilizer, improving the uniformity, texture, and stability of tablets and other solid forms.
Sodium Stearate is known for its ability to enhance the properties of products, providing smoothness, stability, and ease of application in everything from skin care to industrial products.
Sodium Stearate is a key component in many formulations that require emulsification, thickening, or surfactant properties, making it an essential ingredient in both consumer and industrial products.
PROPERTIES
Chemical Formula: C₁₈H₃₅NaO₂
Molecular Weight: 306.46 g/mol
Common Name: Sodium Stearate
Appearance: White powder or granules
Odor: Mild, fatty odor
Solubility: Soluble in water and ethanol
pH (1% solution): Approx. 9.5–10.5
Melting Point: Approx. 245°C (decomposes)
Density: Approx. 1.02 g/cm³
Reactivity: Reacts with strong acids to release stearic acid
Chemical Stability: Stable under normal storage conditions
Storage Temperature: Store between 15–30°C in a dry area
Shelf Life: 24 months in original packaging
FIRST AID
Inhalation:
Move the individual to fresh air.
If respiratory irritation occurs, seek medical attention.
Skin Contact:
Wash the affected area with water and soap.
Sodium stearate is generally non-irritating, but medical attention is advised if irritation persists.
Eye Contact:
Rinse thoroughly with water for at least 15 minutes.
Seek medical attention if symptoms develop.
Ingestion:
Rinse mouth and seek medical attention if large amounts are ingested.
Do not induce vomiting unless directed by a physician.
Note to Physicians:
Treat symptomatically. Sodium stearate has low toxicity but may cause mild gastrointestinal discomfort in large quantities.
HANDLING AND STORAGE
Handling:
Use appropriate PPE such as gloves and goggles in industrial settings.
Avoid inhalation of dust and direct contact with eyes.
Use in well-ventilated areas to minimize exposure.
Spill and Leak Procedures:
Sweep up and collect in appropriate containers for disposal.
Clean the area with water and detergent.
Storage:
Store Sodium stearate in a tightly sealed container in a cool, dry, and well-ventilated area.
Keep away from moisture, strong acids, and incompatible materials.
Protect from direct sunlight and heat.
Handling Cautions:
Avoid prolonged exposure to moisture as it may affect product quality.
Follow standard hygiene and storage practices for surfactants and emulsifiers.
