Customization: | Available |
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CAS No.: | 86438-79-1 |
Formula: | C19h38n2o3 |
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Cocamidopropyl betaine is used as a foam booster in shampoos.[4] It is a medium-strength surfactant also used in bath products like hand soaps. It is also used in cosmetics as an emulsifying agent and thickener, and to reduce irritation purely ionic surfactants would cause. It also serves as an antistatic agent in hair conditioners, which most often does not irritate skin or mucous membranes. However, some studies indicate it is an allergen.[5][6][7]
CAPB is obtained as an aqueous solution in concentrations of about 30%.
Typical impurities of leading manufacturers today:
The impurities AA and DMAPA are most critical, as they have been shown to be responsible for skin sensitization reactions. These by-products can be avoided by a moderate excess chloroacetate and the exact adjustment of pH value during betainization reaction accompanied by regular analytical control.
Properties | |
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Chemical formula
|
C19H38N2O3 |
Molar mass | 342.524 g·mol−1 |
Appearance | Clear to slight yellow liquid[1] |
Density | 1.05 g/cm3 |
Melting point | < −10 °C (14 °F; 263 K)[1] |
Boiling point | > 100 °C (212 °F; 373 K)[1] |
Solubility in water
|
Soluble[1] |
Viscosity | < 100 cP (30°C)[1] |