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. |