UV ABSORBER PR25 CAS NO.7443-25-6
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China [CN] Chemical name: Propanedioic acid, [(4-methoxyphenyl)-methylene]-dimethyl ester
CAS No.: 7443-25-6
Molecular formula: C13H14O5
Molecular weight: 250
Molecular structure
Specification
Appearance: White to crystalline powder
Assay, %: ≥99
Melting point，℃: 55-59℃
Loss on Drying, %: ≤0.5
Transmittance: 425nm≥95%
500nm≥96%
Application
UV ABSORBER 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.
It can be also used in solventborne coatings and general industrial coatings where stabilization requirements remain moderate.It is particularly recommended for UV cured systems and clear coats where colour neutrality is essential.
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