1 High Range Water Reducing 2 Sodium Naphthalene Sulfonate less 18% 3 ASTM C494, Type F, ASTM ... development, commonly referred to as a superplasticizer, also named Naphthalene Sulfonate Formaldehyde Condensate (NSF), SNF, PNS and FDN etc. JK-02NP ... Substantial improvement in workability without increased water or the risk of segregation. Normal set without retardation, even when overdosed. Improved ...