Potassium Laurate (C12 Potassium Soap)

Potassium Laurate – Mild Anionic Surfactant for Soaps, Shampoos, and Cleansers

Basic Information

• CAS Number: 10124-65-9 (primary reference; some sources may list conflicting numbers)

• Molecular Formula: C₁₂H₂₃KO₂ (or C₁₂H₂₃O₂K)

• Molecular Weight: ~238.41 g/mol

• Synonyms: Dodecanoic acid potassium salt, Lauric acid potassium salt, Potassium dodecanoate

• Appearance: White to slightly yellowish powder or flakes

• Odor: Slight, soapy

• Solubility: Highly soluble in water, forming alkaline solutions; limited solubility in organic solvents

• Storage: Store in tightly sealed containers at room temperature, preferably in a cool, dark place (<15°C), protected from moisture and light

Overview
Potassium laurate is the potassium salt of lauric acid (dodecanoic acid), a medium‑chain saturated fatty acid commonly derived from coconut oil and palm kernel oil. It is produced by neutralizing lauric acid with potassium hydroxide. As an anionic surfactant, it exhibits excellent foaming, emulsifying, and cleansing properties, making it a valuable ingredient in personal care and household cleaning formulations. Its mildness and biodegradability contribute to its widespread use in soap and cosmetic products.

Applications

• Soaps and cleansers: Used as a primary surfactant in solid and liquid soaps, syndet bars, and castile soaps.

• Shampoos and shower gels: Provides rich, creamy foam and gentle cleansing.

• Facial cleansers and body washes: Suitable for mild formulations.

• Household cleaning: Used in dishwashing liquids, all‑purpose cleaners, and degreasing agents.

• Textile processing: Acts as an emulsifier in finishing and impregnation formulations.

• Pharmaceuticals: Serves as an emulsifier and dispersing agent in topical medications.

Key Benefits

• Excellent foaming and cleansing power.

• Mild and gentle on skin at typical concentrations.

• Biodegradable and environmentally friendly.

• Derived from renewable plant‑based sources (coconut/palm kernel oil).

• Compatible with other anionic, nonionic, and amphoteric surfactants.

• Provides a smooth, non‑greasy after‑feel.

Safety and Handling

• Generally recognized as safe (GRAS) for use in cosmetics and personal care at recommended concentrations.

• May cause mild skin dryness or irritation at high concentrations; use with emollients if needed.

• Avoid contact with strong acids, which may release free fatty acids.

• Store in a cool, dry place, away from direct sunlight and moisture.

• Use appropriate personal protective equipment (gloves, safety goggles) when handling.

Quality Assurance
Each batch is tested for purity (≥98% typically available), pH, and foaming performance to ensure consistent quality.