| ITEM | SPECIFICATIONS | 
| 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 |