1. Chinese name: Fluorescent brightener 2. 3. Appearance light yellow crystalline powder melting point of 357-360 ℃ 4. purity ≥98.50% 5. Appearance: light yellow crystalline powder 6. Melting point: 357-360 ℃ 7. Purity: ≥ 98.50% 8. The maximum UV absorption wavelength: 374nm UV absorption maximum wavelength: 434nm 9. Uses: This product is especially for high temperature molding of various plastic and plastic products, as has good heat resistance, light resistance, Chlorine bleaching properties, so the whitening effect brightener polyester and cotton and other fibers blended fabric polyester fibers are particularly desirable, and can be used for whitening of polyester dope. 10. Use: 0.01-0.05% brightener equivalent plastic or polyester pellet weight before molding plastic products or polyester fibers before spinning, and the material mix evenly. 11. Scope: Fluorescent brightener particularly high temperatures, mainly used in hot melt pad whitening method for whitening of polyester fiber and polyester with cotton and other fibers blended fabric whitening. The product can also be used ABS, PS, HIPS, PA, PC, PP, EVA and PVC and other rigid plastic whitening, nylon fibers, nylon and polyester is added after the OB-1 will be significantly improved whiteness. Join OB-1 recovered material will appear whiter in recycled polyester fiber waste, bottle feeding and slices, and different feedstock recycling will become more consistent color.