... ,TTA-NA,TTZ-NA Purity:49.5%-51% Tolyltriazole 50% sodium saltMolecular formula: C7H6N3NaMolecular weight: 133.15Specification Appearance:Clear,yellow to ... red brown solutionAssay content: 49.5% min.Chlorinity: 100ppm max.Free NaOH: 0.5% max.Free alkali ... , ultraviolet absorbent , anti-freezing agent , cycling cooling water treatment Tolyltriazole Sodium salt 50%min.