Fluorescent brightener OB-1

Chemical name: 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole
Structural formula:

CAS No.: 1533-45-5
Molecular weight: 414.4
Specifications:
Appearance: Yellowish green powder
Melting point:359-361°C
Ash: 0.1%max.
Volatile Content: 0.5%max
Particle Size: 500meshes
Assay: 98%
Application:
An optical brightener for plastics (PP, ABS, EVA, PS and PC) and Fiber(polyester fiber and PP fiber).
Packing:
25kgs/fiber drum