UV Absorber 326

Product Overview

UV Absorber 326, chemically known as Bumetrizole, is a high-performance benzotriazole derivative widely recognized for its exceptional ability to protect polymer matrices from ultraviolet degradation. As a critical component in the specialty chemicals sector, this light stabilizer functions by absorbing harmful UV radiation in the 270 to 380 nanometer range and dissipating the energy as harmless heat. This mechanism significantly extends the service life of materials exposed to sunlight and harsh weather conditions.

Our manufacturing process ensures rigorous quality control, delivering a product with minimal impurities and consistent performance batch after batch. The compound exhibits low volatility and excellent thermal stability, making it suitable for high-temperature processing environments commonly found in modern polymer extrusion and molding operations.

Technical Specifications

Industrial Applications

This UV stabilizer is versatile and compatible with a broad spectrum of synthetic resins. It is particularly effective in polyvinyl chloride (PVC), polystyrene (PS), polycarbonate (PC), and polymethyl methacrylate (PMMA). Additionally, it performs well in unsaturated resins, polyethylene, ABS resin, epoxy systems, and cellulose derivatives. Due to its low color contribution, UV Absorber 326 is especially recommended for colorless transparent products and applications where aesthetic clarity is paramount.

The recommended dosage varies based on product thickness. For thin films and sheets, a concentration of 0.1% to 0.5% is typically sufficient. For thicker sections, the usage level can be adjusted to between 0.05% and 0.2% to achieve optimal protection without compromising physical properties. Notably, this grade complies with regulations allowing contact with food products, expanding its utility in packaging solutions.

Storage and Handling

UV Absorber 326 is classified as non-dangerous goods for transport. It is non-toxic, non-flammable, and non-corrosive under normal conditions. To maintain optimal quality, store the material in a cool, dry, and well-ventilated area away from direct sunlight and moisture. The product demonstrates excellent storage stability when kept in its original packaging, which typically consists of cardboard drums lined with plastic bags, with a net weight of 25kg per drum. Custom packaging solutions are available to meet specific logistical requirements.