UV Absorber Pr-25 Cas No.7443-25-6

It is white and does not discolor even when present in high concentrations of resin. It doesn't combine with metal ions to generate colorful complexes. Recommended for usage in cellulosic, rigid PVC materials, polyesters, PC, polyamides, styrene plastics, and EVA copolymers. It is especially suggested for clear coatings and UV-cured systems when color neutrality is crucial. It is intended for safe use. It has an extended shelf life. Chemical name: Propanedioic acid, [(4-methoxyphenyl)-methylene]-dimethyl ester CAS No.: 7443-25-6 Molecular formula: C13H14O5 Molecular weight: 250 Appearance: White to crystalline powder Assay, %: ≥99 Melting point,℃: 55-59℃ Loss on Drying, %: ≤0.5 Transmittance: 425nm≥95% 500nm≥96% UV ABSORBER HOSORB UV PR-25 exhibits excellent absorbtion especially in the UVB-range. It is colorless and even in high concentration in the resin does not lead to any discoloration. It doesn’t form colored complexes with metal ions. Recommended for use in PVC, polyesters, PC, polyamides, styrene plastics, EVA copolymers, and cellulosics, particular in rigid PVC materials.