CAS number 5466-77-3 refers to the chemical compound Octyl 4-methoxycinnamate. Octyl 4-methoxycinnamate is an organic compound commonly used in the production of sunscreens and cosmetic products. It is a clear liquid that is insoluble in water but soluble in organic solvents such as ethanol and acetone.

Octyl 4-methoxycinnamate is primarily used as a UVB absorber, meaning it helps to protect the skin from the harmful effects of ultraviolet (UV) radiation from the sun. It works by absorbing UVB rays and converting them into less damaging energy, thus preventing sunburn and reducing the risk of skin cancer.

In addition to its UV protective properties, Octyl 4-methoxycinnamate also possesses antioxidant and antimicrobial properties, making it a versatile ingredient in various skincare and cosmetic formulations. It is commonly incorporated into sunscreens, moisturizers, lip balms, and other personal care products to provide broad-spectrum sun protection while ensuring a pleasant sensory experience.

Octyl 4-methoxycinnamate is considered safe for topical use in concentrations up to 10% by regulatory authorities such as the U.S. Food and Drug Administration (FDA) and the European Union’s Scientific Committee on Consumer Safety (SCCS). However, individuals with sensitive skin or allergies may experience adverse reactions, such as skin irritation or contact dermatitis, when exposed to products containing this compound.

Overall, Octyl 4-methoxycinnamate plays a crucial role in protecting our skin from the damaging effects of the sun’s UV rays, allowing us to enjoy outdoor activities while minimizing the risks associated with sun exposure. Its versatile properties and widespread usage make it an essential ingredient in many personal care products, contributing to the overall well-being and health of individuals.