~Product Name Optical Brightening Agent OB  
Chemical Name 2,5'-Bis[2-(5-tert-buty l-2 benzoxazoly)thiophene
CAS No. 7128-64-5
C.I. No. 184
Structural Formula 
Molecular Formula C26H26N2O2N2
Molecular Weight 430
Technical Index Appearance:slight greenish yellow powder
Melting Point:200-202°C
Purity:≥99%
Uses Mainly be used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP), polyester fiber, paint and ink, etc.
Pplastics:about 200g per 1000kgs
Packing  25 kg per fiber drum