For formulators across diverse sectors, achieving optimal material performance often hinges on the judicious selection of specialty additives. Among these, UV absorbers are critical for protecting products from the damaging effects of ultraviolet radiation. UV Absorber 531 (CAS: 1843-05-6), a prominent member of the benzophenone UV absorber class, offers a compelling combination of properties and versatility that make it a favored choice for formulators worldwide.

NINGBO INNO PHARMCHEM CO.,LTD., as a dedicated manufacturer and supplier, is committed to empowering formulators with high-quality chemical solutions. We understand that when professionals aim to buy UV Absorber 531, they seek not just a product, but a reliable component that enhances their formulations. Our aim is to provide detailed insights into why UV Absorber 531 is an excellent choice, coupled with competitive pricing and assured supply from China.

UV Absorber 531’s efficacy stems from its molecular structure, which enables it to strongly absorb UV radiation between 240 and 340 nm. This absorption process is fundamental to preventing polymer degradation, a common issue in plastics, coatings, and elastomers. By converting UV energy into heat, it shields the material matrix from photo-induced chemical reactions that lead to discoloration, loss of mechanical properties, and premature failure. Formulators often seek this specific type of protection for products intended for outdoor use or exposure to light sources.

Key technical specifications for UV Absorber 531 include its appearance as a light yellow powder, a purity level typically above 99%, and a melting point range of 47-50°C. Its low volatile matter content (≤0.5%) ensures stability during high-temperature processing, a critical consideration for many manufacturing operations. Furthermore, its excellent light transmittance at various wavelengths (≥84% at 440nm, ≥96% at 460nm, ≥97% at 500nm) indicates minimal impact on the visual appearance of the final product.

The compatibility of UV Absorber 531 with a wide array of polymers, including PE, PP, PVC, PS, PC, and EVA, as well as its suitability for various coating systems like automotive paints and polyurethanes, makes it a versatile tool for formulators. Its effectiveness is further enhanced when used synergistically with Hindered Amine Light Stabilizers (HALS), providing a robust defense against photodegradation. For those in search of a dependable UV Absorber 531 supplier, NINGBO INNO PHARMCHEM CO.,LTD. offers the technical expertise and product quality to meet exacting formulation requirements.

We invite all formulators and chemists to explore the benefits of integrating UV Absorber 531 into their product lines. Contact NINGBO INNO PHARMCHEM CO.,LTD. for a detailed product inquiry, a competitive quote, or to request samples. Leverage our commitment to quality and service to achieve superior UV protection in your applications.