This product is a 50% active concentration solution of cetrimonium chloride, using a mixture of water and ethanol as the solvent. As a quaternary ammonium surfactant, it is a clear to slightly yellowish liquid that disperses smoothly and is chemically stable. The ethanol not only helps it dissolve better in aqueous and semi-aqueous systems, but also makes it smoother to apply and dries faster. Its pH range is between 6 and 8, making it compatible with acidic formulations in personal care and industrial applications.
How it works
The positively charged head of cetyltrimethylammonium chloride electrostatically attracts negatively charged surfaces like fibers and keratin. This is particularly useful in rinse-off products, where it reduces static electricity, smooths surface roughness, and provides a conditioning effect. In cleansers, it acts as a cationic surfactant, reducing surface tension and forming a useful antistatic film. The added ethanol acts as a cosolvent, allowing the product to dry faster and wet the surface more easily, making it much easier to use.
Application Benefits
In acidic toilet bowl cleaners, hard surface cleaners, and household degreasers, this 50% solution thickens the product, provides more even coverage, and enhances anti-static properties. It can be used in combination with nonionic surfactants and acid-resistant polymers to create formulas that leave less residue. In hair care products, it provides a mild conditioning effect without buildup, making it suitable for clear, water-rinsable systems that require a mild cationic effect and smoother hair.
Formulation Usage
This 50% solution of cetyltrimethylammonium chloride in water/ethanol is very convenient; it can be added directly at room temperature without preheating. The specific dosage depends on the product—1% to 3% for toilet bowl cleaners, 0.5% to 2% for hard surface products, and 0.1% to 0.5% for water-rinsable hair care products (within the regulatory limit). It can be used well with nonionic and amphoteric surfactants, but care should be taken to avoid mixing it with strong anionic surfactants, otherwise precipitation may occur.