CAS NO.: 1533-45-5
2,2-(1,2-Ethenediyldi-4, 1-phenylene) bis-benzoxazole
Molecular Formula: C28H18N2O2
Molecular weight: 414.4
CAS No.: 1533-45-5
Odor: Free of Odor
Volatile Content: 0.3% Max
Assay: 99% Min
Particle Size: 60-200 Mesh
Appearance: Yellowish or yellowish green crystal powder
Max. Absorption Wavelength: 374 nm (in ethanol)
Max Emission Wavelength: 434 nm(in ethanol)
Optical brighteners function by absorbing ultraviolet radiation and remitting blue light. The emitted blue light will reduce the yellow color of a polymer.
OB-1 has excellent whiteness in Polyester fibers, also wildly used in ABS, PS, PET, HIPS, PA, PC, PP, EVA and hard PVC etc.
OB-1 performs excellent resistance to heat, remarkable whitening effects, good light fastness and very low dosage.