Flake caustic soda
- Chemical Formula: NaOH
- Other names: sodium hydroxide, caustic soda
- Package: 25 kg bags, 1000 kg big bags
- Application:
pulp and paper, alumina, soap and detergents, petroleum products and chemical production, water treatment, food industries, textiles, metal processing, mining, glass making and others.
- Specification:
| Property | Result | Standard | Units |
| Purity | Min 99.16 | Min 98 | % |
| Sodium carbonate | Max 0.43 | Max 1 | % |
| Sodium chloride | Max 0.0085 | Max 0.06 | % |
| Sodium sulfate | Max 0.0047 | Max 0.01 | % |
| Sodium sulfate | Max 0.0019 | Max 0.002 | % |
| Fe | Max 30 | Max 12.5 | Mg/kg |
| Insoluble materials | 0 | Max 0.1 | % |
| Aluminium oxide | Max 20 | Max 20 | Mg/kg |
| Heavy metals | Max 20 | Max 20 | Mg/kg |