| Name | Sodium Hydroxid/Caustic Soda |
| Molecular formula | NaOH |
| Molecular weight | 39.996 |
| CAS NO. | 1310-73-2 |
| EINECS NO. | 215-185-5 |
| Appearance | White or light yellow shiny solids |
| UN Number | 1824,1823 |
| GHS signal word | Danger |
| Density | 2.130g/cm 3 |
| Melting point | 318.4ºC |
| Odor | Odorless |
| Property | Strong hygroscopic,soluble in water,corrosive,reacts easily |
| Item | Index | ||
| Caustic Soda Flakes | Superior | First Class | Qualified |
| Appearance | White shiny solids | ||
| NaOH,%,≥ | 99.0 | 98.5 | 98.0 |
| Na 2 CO 3, %,≥ | 0.5 | 0.8 | 1.0 |
| NaCl,%,≥ | 0.03 | 0.05 | 0.08 |
| Fe 2 O 3, %,≥ | 0.005 | 0.008 | 0.01 |
| Item | Index | ||
| Caustic Soda Pearls | Superior | First Class | Qualified |
| Appearance | White shiny solids | ||
| NaOH,%,≥ | 99.0 | 98.5 | 98.0 |
| Na 2 CO 3, %,≥ | 0.5 | 0.8 | 1.0 |
| NaCl,%,≥ | 0.03 | 0.05 | 0.08 |
| Fe 2 O 3, %,≥ | 0.005 | 0.008 | 0.01 |