Specification Appearance:Slightly yellow powder Assay:¡Ý99% Melting point:128-132℃ Loss on drying:¡Ü0.5% Ash: ¡Ü0.1% Light Transmittance wavelength nm T % 440 ¡Ý97 550 ¡Ý98 USE:As the ultraviolet absorption agent,it is available to polyester,epoxy,cellulose acetate,PVC,polystyrene,plexiglass and polyacrylonitrile resin etc.The max.absorbing wavelength range is 270-380nm.The general consumption:0.1-0.5% for thin matter,0.05-0.2% for thick matter.
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