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Cetyl palmitate (C₃₂H₆₄O₂) is a wax ester synthesized from cetyl alcohol (C₁₆ alcohol) and palmitic acid (C₁₆ fatty acid).
Key Properties:
White, solid wax (m.p. 45–55°C).
Insoluble in water; soluble in oils, ethanol.
Non-greasy, skin-compatible texture.
Primary Uses:
Cosmetics:
Emollient & thickener in creams, lotions, lipsticks (enhances stability/spreadability).
Pharmaceuticals:
Tablet coating agent; binds ingredients.
Food:
Glazing agent (often under E903 with carnauba wax).
Safety:
Non-toxic, non-irritating (GRAS/ISO-certified).
Derived from natural fats (e.g., palm oil).
Cetyl palmitate (chemical formula: C₃₂H₆₄O₂, IUPAC name: hexadecyl hexadecanoate) is a saturated ester formed by the reaction of cetyl alcohol (C₁₆H₃₃OH) and palmitic acid (C₁₅H₃₁COOH).
Structure:
Combines a 16-carbon fatty acid (palmitate) and a 16-carbon fatty alcohol (cetyl).
Linear hydrocarbon chains; no double bonds.
Physical State:
White, waxy solid at room temperature.
Melting point: 45–55°C.
Solubility:
Insoluble in water; soluble in oils, ethanol, and chloroform.
| Industry | Role |
|---|---|
| Cosmetics | Emollient & thickener in creams, lotions, lipsticks (improves texture/stability). |
| Pharmaceuticals | Coating agent for pills; enhances tablet hardness. |
| Food | Glazing agent (E number: E903*). |
| (Note: Often grouped with carnauba wax under E903) |
Non-toxic, non-irritating (widely used in skincare).
Biodegradable; derived from natural fats/oils.
Summary: As a biocompatible ester, cetyl palmitate provides structure, emollience, and stability to formulations, leveraging its waxy nature and hydrophobic properties.
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