Specification :

KSS is the potassium salt of a complex of diphenyl sulfonate and
diphenyl sulfone disulonate.KSS does not affect the transparency
of polycarbonate formulations as it has the same refractive index as
polycarbonate. KSS is more economical to use than potassium
perfluorobutylsulfonate.KSS is a white powder and provides flame
retardant performance at fractional loading levels or less than 0.5%
by weight in the polycarbonate formulation.Therefore, it may be helpful
to produce and utilize KSS in concentrate form for more effective
dispersion into the polycarbonate matrix.