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Classification: Chemical Auxiliary Agent
Brand Name: HONOX
Usage: Plastic Auxiliary Agents,Rubber Auxiliary Agents
Type: Adsorbent
Adsorbent Variety: UV ABSORBER
CAS No.: 7443-25-6
Classification: ADDITIVE
Model Number: PR-25
Place of Origin: China (Mainland)
Other Names: CYASORB UV 1988, UV ABSORBER PR25,UV 1988

Specifications

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 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. 
UV ABSORBER PR25 CAS NO7443256