Caustic Soda Liquid – Product Description and Properties

Caustic soda liquid, also known as sodium hydroxide solution (NaOH), is one of the most important and widely used chemicals in modern industry. This strong alkali, typically supplied at a 50% concentration, is well known for its ability to neutralize acids and participate in a wide range of chemical reactions.

The solution is clear, colorless, and odorless, but extremely corrosive and highly soluble in water. It is mainly produced through the chlor-alkali process, in which salt (sodium chloride) and water undergo electrolysis to produce sodium hydroxide, chlorine, and hydrogen gas.

Depending on purity and intended use, caustic soda liquid is available in several grades:

• Commercial Grade (≈50%) – ideal for general industrial use, detergent production, and acid neutralization.
• Industrial Grade (≈50%) – preferred for pulp and paper, textile, and petroleum refining applications.
• Food Grade – suitable for food processing, olive softening, and cocoa treatment.
• Pharmaceutical Grade – used in medical, laboratory, and pharmaceutical manufacturing.
• High-Purity Grade – produced for high-tech applications such as electronics and fine chemicals.

Thanks to its versatility and reliability, caustic soda liquid is an essential chemical for maintaining quality and efficiency across various production processes.

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Applications and Uses of Caustic Soda Liquid

1. Chemical Manufacturing

Caustic soda liquid is a key ingredient in the production of detergents, soaps, bleach, and synthetic fibers such as rayon. Its strong alkalinity allows it to neutralize acids and improve the efficiency of numerous chemical reactions.

2. Water Treatment

It plays a vital role in water and wastewater treatment by adjusting pH levels, removing heavy metals, and neutralizing acidic impurities—helping to ensure cleaner, safer water supplies.

3. Pulp and Paper Industry

In paper production, caustic soda helps dissolve lignin in wood during pulping and assists in bleaching. This results in stronger, brighter paper used in everything from printing to packaging.

4. Petroleum Refining

Caustic soda liquid is used to remove acidic contaminants like hydrogen sulfide from crude oil, preventing corrosion and improving product quality. It is also an important catalyst in biodiesel production, supporting more sustainable energy practices.

5. Textile Industry

In textile processing, it’s used to clean natural fibers such as cotton, remove waxes and oils, and prepare fabrics for dyeing—resulting in vibrant, long-lasting colors.

6. Food Industry

Food-grade sodium hydroxide is used to peel fruits and vegetables, soften olives, process cocoa beans, and manufacture certain food additives, ensuring both quality and safety.

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Handling, Storage, and Transportation

Because caustic soda liquid is highly corrosive, it must be handled with care. Always wear personal protective equipment (PPE) such as gloves, goggles, and chemical-resistant clothing.

• Storage: Keep the product in a cool, dry, and well-ventilated area, away from acids, flammable materials, and aluminum. Use corrosion-resistant containers such as HDPE or coated steel tanks.
• Transportation: It is commonly transported in HDPE drums, IBC tanks, or bulk tankers designed for corrosive materials.
• Spill Response: In case of spills, neutralize with a weak acid such as vinegar or acetic acid and flush the area with plenty of water.

Following proper labeling and safety protocols ensures safe storage and handling during shipping and use.

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Packaging Details

 Supply caustic soda liquid (50% NaOH) in various packaging options to meet customer requirements:

• 200-liter HDPE drums
• IBC tanks (1000 liters)
• Bulk tanker trucks for large industrial operations

All packaging complies with international standards for transporting corrosive materials, ensuring safe and secure delivery worldwide.