Optical brightening agent 4BK

Chemical name :  Stilbene Bistriazine derivative

C.I.No.:  -

CAS.No.:  27344-41-8

Molecular Formula :  C28H20S2O6Na2

Molecular weight :  838

Appearance:  Yellow crystallized powder

Fluorescence strength(compare with standard) 100±3

Moisture, % :  5

Applications :  Apply to whitening stage of cotton and Dacron-cotton blends

Structure :