Overview
Cholesteryl stearate is an ester derived from cholesterol and stearic acid. It is widely utilized in various industries due to its emulsifying and stabilizing properties. This compound is particularly valued in pharmaceuticals and cosmetics for its ability to improve texture and consistency. In the food industry, cholesteryl stearate acts as a stabilizer and emulsifier, enhancing product shelf life and quality. Its biodegradability and non-toxic nature make it a preferred choice for formulations requiring safety and environmental compliance.
Physical and Chemical Properties
Cholesteryl stearate appears as a white to off-white crystalline powder with a molecular weight of 653.13 g/mol. It has a melting point range of 80-85°C and is insoluble in water but soluble in organic solvents like ethanol and chloroform. The compound is stable under normal conditions and exhibits low reactivity, making it suitable for long-term storage. Its density is approximately 0.95 g/cm³, and it is characterized by its non-toxic and biodegradable nature, which aligns with environmental and safety regulations.
Main Applications
Cholesteryl stearate is primarily used in the pharmaceutical industry as an excipient in tablet and capsule formulations. It acts as a lubricant and stabilizer, ensuring uniform drug distribution and prolonged shelf life. In cosmetics, it serves as an emulsifier and thickening agent in creams and lotions, enhancing texture and stability. The food industry employs it as a stabilizer in processed foods, where it improves consistency and prevents ingredient separation.
Safety and Storage
Cholesteryl stearate is generally considered safe for use in regulated industries. However, precautions should be taken to avoid inhalation of dust and direct contact with eyes. Proper storage in a cool, dry place away from light and moisture is essential to maintain its stability and efficacy. Handling should comply with standard laboratory safety protocols, including the use of personal protective equipment (PPE) such as gloves and goggles. Spills should be cleaned promptly to prevent slipping hazards and environmental contamination.
B2B Procurement Guide
When procuring cholesteryl stearate, it is crucial to verify the purity and quality specifications provided by the supplier. Reliable suppliers should offer certificates of analysis (CoA) and comply with industry standards such as USP or Ph. Eur. Pricing varies based on purity and quantity, with reference prices ranging from $50 to $200 per kg. Bulk purchases may attract discounts, but buyers should ensure that storage facilities meet the compound's requirements to prevent degradation. Additionally, consider supplier reputation and delivery timelines to ensure consistent supply chain performance.
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