Ob1 Optical Brightener Pigment
Identification
* Product: Optical Brightener OB-1
* CAS No.: 1533-45-5
* Chemical formula: C₂₈H₁₈N₂O₂
* Appearance: yellowish-green crystalline powder or fine powder.
Used in plastics
* PP (Polypropylene)
* PE (Polyethylene)
* PVC
* ABS
* PS
* PET
* PC
* EVA
OB-1 is preferred for plastics because it has excellent heat resistance and provides strong whitening and brightening effects during extrusion and injection molding.