Caustic soda (sodium hydroxide) is a versatile alkali. Its main uses are in the manufacture of pulp and paper, alumina, soap and detergents, petroleum products and chemical production. Other applications include water treatment, food, textiles, metal processing, mining, glass making and others. Around three-quarters of end user demand tracks GDP growth.
| Sodium hydroxide as NaOH, per cent by mass | : | Min. 99.50 |
| Chlorides as NaCl, per cent by mass | : | Max. 0.10 |
| Sodium carbonate as Na2CO3, per cent by mass | : | Max. 0.40 |
