Caustic Soda Flakes (Sodium Hydroxide – NaOH) is a strong alkaline compound widely used in soap & detergent manufacturing, textiles, paper processing, water treatment, and chemical industries.
It is supplied in solid white flake form with high purity, low impurities, and consistent quality suitable for industrial and commercial processing requirements.
Technical Specifications – Caustic Soda Flakes
| Row | Physical and Chemical Properties | ISIRI Compliant Range | Product Range | Standard Reference |
|---|---|---|---|---|
| 1 | Purity of Sodium Hydroxide (NaOH) %W | Min 98 | Min 98 | ISIRI 364 |
| 2 | Carbonate as Na₂CO₃ %W | Max 1 | Max 0.6 | ISIRI 364 |
| 3 | Chloride as NaCl %W | Max 0.06 | Max 0.02 | ISIRI 364 |
| 4 | Sulfate as Na₂SO₄ %W | Max 0.01 | Max 0.005 | ISIRI 364 |
| 5 | Silicate as SiO₂ %W | Max 0.02 | Max 0.005 | ISIRI 364 |
| 6 | Fe (mg/kg) | Max 30 | Max 20 | ISIRI 364 |
| 7 | Insoluble in Water %W | Max 0.1 | 0 | ISIRI 364 |
| 8 | Aluminum (mg/kg) | Max 20 | Max 20 | ISIRI 364 |
| 9 | Heavy Metals as Pb (mg/kg) | Max 20 | Max 20 | ISIRI 364 |
| 10 | Hg (mg/kg) | Max 0.2 | Max 0.2 | ISIRI 364 |
| 11 | As (mg/kg) | Max 2 | Max 0.5 | ISIRI 364 |
| 12 | Appearance | White color, free of visible impurities | OK | ISIRI 364 |