UV ABSORBER UV 3638 CAS NO.18600-59-4

Chemical name:2,2’-(1,4-phenylene)bis-4H-3,1-benzoxazin-4-one

CAS No.:18600-59-4

Molecular formular:C₂₂H₁₂N₂O₄

Molecular weight:368.34

Appearance:White to off-white crystalline powder

Melting point,℃:≥310

Assay, %:≥98

Ash, %:≤0.1

Loss on Drying:≤0.5

UV ABSORBER HOSORB-UV3638 is a highly efficient benzoxazinone type UV absorber, which is distinguished by its superior low volatilityand strong & broad range of UV light absorption together with no color contribution & excellent stabilization for polymers.Itis designed to meet the demanding high temperature requirements for processing engineering plastics such as Nylon, PC,PET,PBT and PPO.Itis also highly effective in other polymers such as polyamides, polyacetals, polyolefins fibers, styrenics, elastomers where long term UV light stability is required. info at hhochem. com