Caustic Soda, also known as Sodium Hydroxide (NaOH), is one of the most commonly used and highly versatile industrial chemicals. It is a strong alkaline compound available in multiple forms including flakes, pearls, solid, and liquid solution (commonly 32% and 50%). With its high reactivity and wide application range, Caustic Soda serves as a critical raw material across a variety of industries including chemicals, metallurgy, pharmaceuticals, textiles, food processing, and environmental treatment.
Chemical Characteristics
Sodium Hydroxide has strong alkalinity and is highly soluble in water, generating heat during dissolution. It reacts readily with acids, esters, amides, fats, and oils. NaOH is non-volatile and stable under normal storage conditions when protected from moisture and air exposure. The product is typically manufactured through membrane electrolysis or diaphragm electrolysis using salt brine as raw material, ensuring purity and consistent performance.
Industrial Uses
1. Paper & Pulp Production
Caustic Soda is used to break down lignin and separate cellulose fibers, enabling sustainable pulp production and bleaching processes.
2. Chemical Manufacturing
It is a fundamental feedstock for production of various compounds including sodium hypochlorite, sodium phosphate, and organic intermediates.
3. Wastewater Treatment
NaOH neutralizes acidic industrial effluents and facilitates removal of heavy metals through precipitation.
4. Textile Processing
It improves brightness and dye absorbance of fibers, and plays a key role in mercerization treatment for cotton.
5. Petroleum & Refining
Used for sulfur removal and acidity treatment during oil refining and fuel upgrading.
6. Food Processing (approved industrial applications)
Sodium Hydroxide is used for peeling fruits and vegetables, cocoa processing, soft drink manufacturing, and as a cleaning agent for equipment.
Quality and Specifications
Typical industrial grade Caustic Soda Flakes contain:
NaOH: ≥ 99%
Na2CO3: ≤ 0.5%
NaCl: ≤ 0.1%
Fe2O3: ≤ 0.005%
We supply NaOH in forms including:
Caustic Soda Flakes 99%
Caustic Soda Pearls 99%
Liquid Caustic Soda (32%, 48%, 50%)
Packaging options:
PP woven bags with inner PE
25kg / 50kg / jumbo bag
IBC / ISO tank for liquid NaOH
Storage & Handling
Caustic Soda must be stored in sealed containers, away from acids and moisture. Operators should wear gloves, goggles, and protective clothing when handling. In cases of accidental skin contact, flush immediately with water.
Why Choose Us
Weiqi Chemical provides a consistent and stable supply of Caustic Soda with global export capability. Our products are certified and exported to numerous countries in Southeast Asia, Middle East, Africa, Europe, and South America.
For detailed specifications and quotations, please contact:
Kitty Liu | Sales Manager
Dongguan Weiqi Chemical Co., Ltd.
📱 Cel/Wechat: +86 138 2440 4576
📧 Email: kitty@weiqichem.com
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