Optical Brightener OB

Product Name

Optical Brightener OB

Product Code

OB，OB-184

CAS No.

7128-64-5；12224-40-7

Chemical Name

2,5-Bis(5'-tert-butyl-2-benzoxazol-2-yl)thiophene

Formula

C26H26N2O2S

Molecular Weight

430.56

Specification

Appearance：Pale yellow-green fine powder

Melting Point：197-203℃

Loss on drying：0.5%Max

Ash: 0.1%Max

Assay ：98.0% Min.

Transmittance： ≥90.0%（450nm）；

≥93.0%（500nm）

Packing

25kg/Carton or drum

Application

OB is widely used in PVC, PE, PP, PS, ABS, PMMA, POM and other thermoplastic plastics as well as thermosetting plastics, polyester fiber, paint, ink, paint and other whitening.