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A.K. TINSON

Stearic Acid

Stearic Acid

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Stearic Acid is a saturated, long-chain fatty acid derived from vegetable or animal fats. It functions as a versatile emulsifier, thickener, and opacifier, providing structure and hardness to solid formulations while imparting a rich, smooth texture to creams and lotions. Widely utilized in cosmetics, personal care products, and soap making, Stearic Acid also serves as a processing aid, lubricant, and release agent across various industrial applications.

Common Applications

  • Skincare Creams, Lotions, and Body Butters
  • Bar Soaps and Shaving Creams
  • Cosmetics and Color Makeup Formulations
  • Candles and Wax Blends
  • Rubber, Plastics, and Polymer Processing
  • Industrial Lubricants and Release Agents

Key Features

  • Acts as a natural thickener and viscosity builder
  • Imparts hardness and structural integrity to solid soap bars and candles
  • Functions as a co-emulsifier and stabilizer in oil-in-water emulsions
  • Provides an opaque, pearlized appearance to cream and cleansing formulas
  • Enhances skin feel by delivering smooth application and emollient properties

Specifications

Property Value
Chemical Name Stearic Acid (Octadecanoic Acid)
CAS Number 57-11-4
Chemical Family Saturated Fatty Acid
Appearance White to off-white flakes, beads, or powder
Solubility Soluble in alcohol, ether, and oils; insoluble in water
Suggested Usage Rate 1.0% – 5.0% (Emulsions & Lotions); 2.0% – 10.0% (Soaps & Solid Bars); 5.0% – 25.0% (Candles & Industrial Coatings)
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