Cetyl alcohol – Advanced structuring and controlled release excipient
1. General introduction to Cetyl Alcohol
Cetyl alcohol is a long-chain fatty alcohol in solid form, primarily composed of 1-hexadecanol (C16H34O). It is widely used as a structuring agent, emulsifier, and controlled release excipient in advanced pharmaceuticaland cosmetic formulations. With its water-insoluble, non-volatile nature and ability to form a stable base, cetyl alcohol plays a key role in building product texture and maintaining the consistency of emulsion systems.
Unlike conventional alcohols that may cause skin dryness, cetyl alcohol provides emollient properties, enhances sensory performance, and improves formulation stability. It serves as a foundational ingredient that enables manufacturers to upgrade formulations, delivering high-quality, stable products that meet stringent international standards in the pharmaceutical and cosmetic industries.
2. Chemical composition of Cetyl Alcohol
Cetyl alcohol mainly consists of 1-hexadecanol with a stable fatty alcohol structure, offering properties suitable for various dosage forms:
Physical form: white powder, granules, or flakes; becomes a clear liquid upon melting
Solubility: insoluble in water, well-dispersed in oil phase
Key specifications:
Acid value: NMT 2
Iodine value: NMT 5
Hydroxyl value: 218 – 238 (USP)
Available commercial grades include:
Granular form: suitable for large-scale manufacturing
Fine powder: optimized for better dispersion
Spray-dried form: ideal for controlled release tablet applications
3. Key advantages of Cetyl Alcohol
Cetyl alcohol possesses intrinsic properties that make it a strategic ingredient in high-performance formulations:
Matrix-forming capability: Supports controlled drug release in sustained-release tablets
Structural stability: Maintains product consistency and physical integrity over time
Effective emulsifying support: Ensures uniform dispersion between oil and water phases
Controlled viscosity enhancement: Optimizes texture without excessive use of additives
High compatibility: Suitable for a wide range of active ingredients and formulation systems
4. Applications of Cetyl Alcohol
Cetyl alcohol is widely used across multiple dosage forms due to its structuring and stabilizing capabilities:
In pharmaceuticals
Sustained-release tablets: Forms matrix systems to control active ingredient release
Film-coated tablets: Acts as a moisture barrier, improving coating stability
Suppositories: Icreases melting point and enhances manufacturing consistency
Liquid formulations: Functions as an emulsifier to stabilize emulsion systems
High-purity Chlorobutanol hemihydrate for sterile pharmaceutical applications. Effective antimicrobial activity, enhanced stability, and compliance with international standards
High-purity Citric acid anhydrous for sensitive pharmaceutical, cosmetic, and food formulations. Precise pH control, enhanced stability, and global compliance
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