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CI 15510

Description

CI 15510, also known as Orange 4 or D&C Orange No. 4, is a synthetic organic compound used as a colorant in cosmetics and personal care products. This water-soluble dye belongs to the azo dye family and imparts a vibrant orange hue to various formulations. It is primarily utilized in products such as lipsticks, nail polishes, and other decorative cosmetics.

The chemical structure of CI 15510 consists of a naphthalene core with azo and hydroxyl functional groups. This configuration contributes to its stability and color-fastness in cosmetic applications. The dye is approved by regulatory bodies, including the FDA, for use in externally applied cosmetics and drugs, with specific concentration limitations.

CI 15510 demonstrates good dispersion properties in oil-based and water-based formulations, making it versatile for different product types. However, it may exhibit pH sensitivity, potentially altering its shade in highly acidic or alkaline environments. Formulators should consider this characteristic when incorporating CI 15510 into products with varying pH levels.

While generally considered safe for topical use, some individuals may experience sensitivity to azo dyes. Therefore, patch testing is recommended for products containing CI 15510, especially for those with known sensitivities to cosmetic colorants.