CAS Number:
61789-40-0
INCI Name:
Cocamidopropyl Betaine
Main Component:
Lauramidopropyl Betaine
Chemical Formula:
C19H38N2O3
EINECS / ELINCS:
263-058-8
COSING Ref. No.:
33494
Description:
Cocamidopropyl Betaine (CAPB) is an amphoteric (zwitterionic) surfactant derived from coconut fatty acids.
The 45% active grade is a high-concentration aqueous solution, designed to provide improved formulation efficiency, reduced water load, and enhanced performance in surfactant systems.
It is especially valued for its exceptional mildness, strong foam-boosting and foam-stabilizing properties, and its ability to reduce the irritation potential of primary surfactants, particularly anionic systems.
Uses:
Cocamidopropyl Betaine 45% Active provides multiple formulation benefits:
Surfactant / Cleansing agent
Foam booster and foam stabilizer
Viscosity modifier in surfactant systems
Mildness enhancer / irritation reducer
Conditioning and antistatic agent
Applications
Used primarily in rinse-off products, including:
Shampoos
Shower gels and bath products
Facial cleansers
Hand soaps
Liquid soaps
Mild household and institutional cleaners
Safety Profile:
General status: Considered safe for cosmetic use when properly formulated.
Typical regulatory position:
Approved for use in both rinse-off and leave-on products within established concentration limits.
Irritation & sensitization:
Potential skin sensitization is mainly associated with residual impurities (amidoamine and DMAPA).
High-purity grades with controlled impurity levels significantly reduce this risk.
Raw material handling:
Concentrated material may cause eye or skin irritation; appropriate handling and dilution are required.
Technical profile: CAPB 45% Active (Aqueous Solution)
| Property | Values |
| Appearance | Viscous, clear to pale yellow liquid |
| Active Matter | ~45% |
| pH (as supplied) | Typically 5.5 – 7.5 |
| Ionic Character | Amphoteric (zwitterionic) |
| Density | ~1.08 – 1.12 g/cm³ |
| Typical Use Concentration in Final Formulas | 2.5% - 5.0% (as a secondary surfactant/foam booster) |
| Solubility | Readily soluble in water |
| Viscosity | Higher than 30% grade (product-dependent) |
| Recommended Use Level | 1.5% – 4.0% in final formulations (as secondary surfactant) |
Formulation Notes:
Compatible with anionic, nonionic, and cationic surfactants
Performs well over a wide pH range
Contributes to improved clarity and foam quality
High-active grade allows lower transport and storage costs
Summary:
Cocamidopropyl Betaine (45% Active) is a high-performance amphoteric surfactant offering excellent foam enhancement, mild cleansing, viscosity support, and conditioning effects. Its higher active content makes it particularly suitable for concentrated and cost-optimized formulations in personal care and cleansing products.