Sodium hydroxide (Caustic soda)
| Parameters | Sodium hydroxide (Caustic soda) |
| Appearance (physical state, colour): | Light yellow liquid, residues available |
| Odour: | Hardly odourless |
| PH: 50 g/l aqueous solution 200C: | 13 - 14 |
| Melting / freezing point,0C: | 120C (at 50%), 10C (at 30%), -230C (at 20%) |
| Initial boiling point, 0C: | 1420C (at 50%), 1180C (at 30%), 1080C (at 20%), |
| Inflammability | Nonflammable |
| Specific mass, g/cm3 | 2,02 - 2,13 |
| Solubility in water | 109 g/100 ml 200C (42 g/100 ml 00C, 335 g/100ml 1000C). |
