Optical brighteners such as
OPTICAL BRIGHTENER OB(FBA 184),
OPTICAL BRIGHTENER OB-1(FBA 393),
OPTICAL BRIGHTENER FP-127(FBA 378),
OPTICAL BRIGHTENER KCB(FBA 367),
OPTICAL BRIGHTENER CBS-X(FBA 351),
OPTICAL BRIGHTENER ER-1(FBA 199),
OPTICAL BRIGHTENER ER-11(FBA 199:1)
OPTICAL BRIGHTENER KSN (FBA 368)
which are mainly used in thermoplastics,resin,fibers,paints,printing ink,detergent,washing liquid,soap etc.
