Optical Brightener OB
Specification: Optical Brightening Agent OB is a high molecular weight optical brightener of
the thiophanate benzoxazole class, suitable for the optical brightener of polymers at all stage
of processing.
Specifications: Appearance: Yellowish or yellowish green crystal powder
Assay: 98.5%
Melting Point: 196-203
Ash: 0.3% max.
Volatile Content: 0.3%max.
Particle size: 200 meshes
Application: It can be used to whiten PVC, polystyrene, polypropylene, PA, PMMA, PE,PP,
Paint, coating, printing ink and so on.
Packing:25kg / fiber drum with PE liner