Product Name: Optical Brightener Ob-1 for PVC, ABS, EVA, PS Model NO.: OB-1 Appearance: Powder Kind: Optical Brightener Color: Green Certification: REACH Melting Point: 357~361 Trademark: DEBORN Transport Package: 25kg/Drum Specification: 98% Origin: China HS Code: 320420 Product Description Chemical Name 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazoleMolecular Formula C7H5O4SNaMolecular Weight 414.4Structure CAS Number 1533-45-5Specification Appearance: Yellowish green powder Melting point: 357~361°C Assay: 98% Volatiles Content 0.5%max Ash content: 0.50%maxPacking 25 kg / PE drumApplications Fluorescent brightener OB-1 mainly used in plastic material such as PVC, ABS, EVA, PS, etc. It also widely used in variety of polymer substance, especially polyester fiber, PP fiber.