Flake caustic soda (NaOH), with high purity and rapid solubility in water, is one of the most widely used strong bases in industry. This product is extensively applied in pulp and paper production, the food industry (peeling fruits and de-bittering olives), and water treatment. Its exothermic reaction with water and high corrosiveness make safe handling and resistant equipment essential.
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Caustic soda flakes, the solid and stable form of sodium hydroxide, hold a key position in industries such as petroleum, textiles, and chemicals. Their ability to regulate pH, remove fats, and break down organic matter makes them a versatile tool for production, cleaning, and neutralization. Storage must be carried out in a dry, moisture-free environment.
Caustic soda flakes (NaOH) are a powerful, odorless alkaline compound with high density and a white crystalline structure, playing a critical role across many industries. In the pulp and paper sector, they are used to remove lignin; in textiles, for mercerization and pH control; and in water treatment, to neutralize acids and precipitate heavy metals.
Their rapid reactivity with both organic and inorganic compounds makes them indispensable in producing resins, soaps, and detergents. When dissolved in water, caustic soda generates an exothermic reaction, which is why safe handling and storage in corrosion-resistant containers are essential.
Commercially, it is primarily produced via the chlor-alkali process, which simultaneously yields chlorine and hydrogen as valuable byproducts.
This combination of versatility and industrial necessity has made caustic soda one of the most strategic chemical commodities worldwide.
Caustic soda flakes are a solid, odorless, crystalline, white, and transparent material, available in flake or granular form. They are non-volatile but highly corrosive and strongly hygroscopic, meaning they easily absorb moisture from the air. As one of the most important industrial chemicals, caustic soda plays a key role in countless production processes.
Its dissolution in water is highly exothermic, releasing significant heat. Due to its corrosive nature, direct contact with skin can cause severe burns, so strict safety measures must always be observed during handling and use.
Applications include:
Aluminum production
Manufacture of sodium silicate
Production of detergents and dishwashing liquids
Leather processing
Viscose fiber production
Food industry uses (such as olive processing)
Production of bleaching agents like perchlorine and sodium hypochlorite (bleach)
PVC manufacturing
Degreasing and cleaning of greasy surfaces and pipelines
Synthesis of numerous organic and inorganic sodium derivatives
This versatility makes caustic soda an indispensable raw material in modern industry, from heavy manufacturing to household chemical production.
| Specification | ISIRI 364 Spec | Unit | Composition / Property |
|---|---|---|---|
| 98.5% | ≥98% | W/W% | NaOH |
| 0.4% | ≤1.0% | W/W% | CO₃²⁻ (as Na₂CO₃) |
| 0.008% | ≤0.06% | W/W% | Cl⁻ (as NaCl) |
| NIL | ≤0.01% | W/W% | SO₄²⁻ (as Na₂SO₄) |
| ≤0.01% | ≤0.02% | W/W% | SiO₂ |
| ≤10 mg/kg | ≤30 mg/kg | mg/kg | Fe |
| NIL | ≤0.1% | W/W% | Insoluble in Water |
| ≤5 mg/kg | ≤20 mg/kg | mg/kg | Al (as Al₂O₃) |
| ≤5 mg/kg | ≤20 mg/kg | mg/kg | Heavy Metals (as Pb) |
| NIL | ≤0.2 mg/kg | mg/kg | Hg |
| ≤0.5 mg/kg | ≤2.0 mg/kg | mg/kg | As (as As₂O₃) |
| 1×3 cm | - | Width & Length | Physical Spec. |
| 0.3–1 mm (Customizable) |
- | Thickness | Physical Spec. |
