Product Name: Optical Brightener KCB Place of Origin: China Features and specifications: 1) Appearance: yellow green powder 2) Chromatic light: bright-colored blue with white light (approximate to standard sample) 3) Melting point: 210 - 212癈 4) Insoluble in water 5) Solid content: ≥99.5% 6) Particle size: 100 meshes 7) Applications: a) Mainly used for brightening synthetic fiber and plastic b) May be used for brightening plastic films of molding press into shape materials of injection mold c) May also be used for brightening polyester fiber, dye and natural paint Packing: 25kg/bi-corrugated paper box with a liner of plastic bag or customize