Appearance White crystalline powder
Purity (on dry base) % 99.0~104.0
Melting point of propyl paraben sodium (°C) 96~99
pH(0.1% water liquor) 9.5~10.5
Sulfate ppm =<300
Chloride ppm =<350
Loss on drying (%) =<5.0
Related substances Qualified
Heavy metals pb(ppm) =<10.0
Appearance of solution Qualified
