Benzophenone-2

Benzophenone-2 (CAS 131-55-5), commonly abbreviated as BP-2, is a hydroxybenzophenone-class UV absorber used to protect materials from ultraviolet-induced degradation. It functions by absorbing UV radiation across a broad spectrum. This chemical prevents photodegradation in both finished products and their substrates. In coatings and industrial polymers, it is incorporated to extend the service life of films, lacquers, and plastic substrates exposed to outdoor weathering.

Printing inks and packaging laminates use it to prevent UV-triggered color fading and resin breakdown over shelf life. In adhesives, sealants, and elastomers, it contributes to cross-linking stability under light exposure. This stability helps in maintaining bond integrity in demanding environments. Personal care formulators have historically used it as a sunscreen active and UV filter in topical products, though regulatory status varies by market.

Buyers should verify current compliance requirements before use. The product is supplied as a pale yellow to off-white crystalline powder. Technical grade is the standard commercial form for most industrial uses. Purity specifications are typically at 98% or above for the standard grade. Cosmetic-grade material is available for personal care applications where documentation requirements are more stringent for manufacturers.