Caustic soda flakes, the solid form of sodium hydroxide (NaOH), are a critical component in a wide variety of industrial applications. Their strong alkalinity, high solubility in water, and reactivity with organic and inorganic substances make them one of the most versatile industrial chemicals available today.

Below, we explore the most important industrial sectors where caustic soda flakes are used globally.

1. Soap and Detergent Manufacturing

Caustic soda is essential in the saponification process, where fats and oils are converted into soap. It reacts with triglycerides to form glycerol and soap molecules. Its powerful cleaning properties also make it a core ingredient in the production of detergents for industrial and household use.

2. Pulp and Paper Industry

In paper production, caustic soda is used to break down lignin and separate cellulose fibers from wood. It also plays a role in bleaching and pH adjustment processes, especially in the Kraft and sulfite pulping methods.

3. Textile Processing

NaOH is used in the mercerization of cotton, a process that increases fiber strength, dye absorption, and luster. It’s also utilized in dyeing, scouring, and fabric finishing, helping remove waxes and oils from natural fibers.

4. Petroleum and Natural Gas Refining

Caustic soda is used to neutralize acidic contaminants, such as hydrogen sulfide and fatty acids, in crude oil and natural gas. This helps in refining fuels and increasing their stability during storage.

5. Water and Wastewater Treatment

Thanks to its high alkalinity, caustic soda flakes are applied to neutralize acidic wastewater, remove heavy metals, and adjust pH levels in water treatment facilities. It’s a vital part of municipal and industrial water treatment systems.

6. Food Industry (in regulated forms)

In regulated amounts, caustic soda is used for peeling fruits and vegetables, cleaning equipment, and even curing olives and pretzels. However, its use in food processing is strictly controlled under safety guidelines.

7. Aluminum and Metal Processing

In aluminum production, caustic soda is used to extract alumina (Al₂O₃) from bauxite ore during the Bayer process. It also plays a role in cleaning and degreasing metals in manufacturing.

8. Chemical Manufacturing

NaOH is a base ingredient in the production of various chemicals such as sodium hypochlorite, sodium phenolate, and epoxy resins. It is also involved in the production of plastics, dyes, and pharmaceuticals.

Iran Caustic Soda – Reliable Global Supplier

Iran Caustic Soda is a trusted supplier and exporter of high-purity caustic soda flakes. With consistent quality, safe packaging, and international shipping capabilities, we serve industries worldwide across Europe, Asia, Africa, and the Americas.

Whether your company operates in cleaning products, water treatment, or energy, our premium-grade NaOH flakes will support your operations with efficiency and safety.