CAS number: 61789-40-0; 86438-79-1;

English names
Cocoyl amide propyldimethyl glycine;
1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-amino-,N-(mixed coco acyl and 9-octadecenoyl) derivs.,hydroxides, inner salts;

Abbreviation
CAB 30 (active matter content ~30%);
CAB 35 (solid content ~35%);

Cocamidopropyl Betaine (CAB/CAPB) is a class of zwitterionic surfactant (amphoteric surfactant) known for its mildness and fine, stable foam. It is commonly used in personal care and household cleaning formulations for its mild cleansing and foam-enhancing properties.

In applications, it functions as a cleansing agent and emulsifier in products such as shampoos, body washes, and skin care formulations. Its low irritation profile makes it suitable for sensitive skin, although it may cause mild allergic reactions in some individuals.

Specifications

• Active matter: 30 ± 2%
• Solid content: 35 ± 2%
• Sodium chloride: ≤ 6.0%
• pH (5% solution, 25°C): about 4.0–8.0
• Color (Hazen): ≤ 100
• Free amine: ≤ 0.5%
• Glycolic acid: ≤ 0.5%
• Monochloroacetic acid: ≤ 20 ppm

Properties and Compatibility

• Mild and low‑irritating, with fine and stable foam; significantly improves skin feel and combing
• Good compatibility with anionic/cationic/non‑ionic surfactants; often used to enhance clarity and stability of formulations
• Exhibits significant thickening when blended with an appropriate amount of anionic surfactant (commonly in shampoo and body wash systems)
• Provides hard‑water resistance, antistatic properties, wetting, and certain bactericidal activity; biodegradable

Typical Applications

• Personal care: Shampoos, body washes, facial cleansers, hand soaps; also used in baby gentle cleansing formulations
• Household cleaning: Various liquid detergent formulations; fiber/ fabric softeners
• Industrial uses: Oilfield applications such as oil displacement agents, viscosity reducers, and foaming agents

Dosage

• Typical dosage reference: Shampoos and body washes ~3–10%; cosmetic products ~1–2% (adjust per target rheology and skin feel)

Basic Information

• Category: zwitterionic surfactant
• Appearance and solubility: Colorless to pale yellow transparent liquid (commonly 30% active), soluble in water
• pH stability: Stable over a wide pH range; typical product pH (5% aqueous solution) is about 4–7