UV Absorber 531 (Octabenzone)

Product Overview

UV Absorber 531, chemically known as Octabenzone or 2-Hydroxy-4-n-octyloxybenzophenone, represents a premier class of ultraviolet stabilizers engineered for extensive industrial applications. As a benzophenone derivative, this compound functions by effectively absorbing harmful UV radiation in the 240 to 340 nanometer range, converting the energy into harmless heat, thereby preventing photodegradation of substrates. Our manufacturing process ensures exceptional purity levels, making it an ideal choice for manufacturers seeking longevity and aesthetic preservation in their final products.

This specialty chemical is characterized by its light color, low toxicity, and excellent compatibility with a wide array of polymer matrices. Its low volatility and minimal migration properties ensure that the protective effects remain intact over extended periods, even under harsh environmental conditions. Whether utilized in rigid plastics or flexible coatings, UV Absorber 531 delivers consistent performance in retarding yellowing and maintaining physical integrity.

Key Specifications

Industrial Applications

The versatility of UV Absorber 531 makes it a critical component across multiple sectors. In the plastics industry, it is extensively incorporated into polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), and polycarbonate (PC) formulations. It is particularly effective in protecting polypropylene fibers and ethylene vinyl acetate (EVA) copolymers from UV-induced embrittlement and discoloration.

Beyond plastics, this absorber provides robust light stability for various coating systems. It is highly recommended for use in dry phenolic and alkyd varnishes, polyurethanes, acrylics, and epoxy resins. The automotive industry benefits significantly from its inclusion in finishing paints and powder coatings, where gloss retention and color stability are paramount. Additionally, it serves as a reliable stabilizer for rubber products exposed to sunlight. The typical dosage ranges from 0.1% to 0.5%, depending on the specific substrate and exposure conditions.

Storage and Handling

UV Absorber 531 is classified as non-dangerous goods for transport and storage. It is non-toxic, non-flammable, non-explosive, and non-corrosive, ensuring safe handling within standard industrial facilities. To maintain optimal quality, the product should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and moisture. The standard packaging consists of cardboard drums lined with plastic bags, with a net weight of 25kg per drum, though custom packaging solutions are available to meet specific logistical requirements. With proper storage, this material exhibits excellent stability over time.