O.B.A. S Yellow powder A Fluorescent brightener for cellulosic fibers, wool, silk, polyamide and their blends.   Stilbene derivative
           
           
O.B.A. FW Brownish
yellow liquid
A Fluorescent brightener for cellulosic fibers, wool, silk, polyamide and their blends.
  Stilbene derivative
           
           
O.B.A. PES Green dispersion N Fluorescent brightener for polyester fibers and their blends in thermosol and exhaust processes.
  Mixture of a
bencoxazol and Stilbene derivative