Caustic Soda Liquid (Sodium Hydroxide Solution – NaOH)

Caustic Soda Liquid is an aqueous solution of Sodium Hydroxide (NaOH), supplied for industrial processes that require immediate usability, precise concentration control, and continuous dosing. It is widely applied in large-scale operations where process stability, safety control, and operational efficiency are critical.

Commercial grades of caustic soda liquid are typically supplied in concentrations of 30%, 32%, 45%, and 50%, with 50% NaOH solution being the standard grade for most industrial applications.

Production Process

Caustic soda liquid is produced through the chlor-alkali electrolysis process, a core industrial chemical technology.

In this process:

• A purified sodium chloride (NaCl) brine solution is electrolyzed.

• The reaction generates sodium hydroxide (NaOH), along with chlorine (Cl₂) and hydrogen (H₂) as by-products.

• The sodium hydroxide is collected directly in liquid form and adjusted to the required concentration.

• No drying or solidification stage is involved, distinguishing it from flake production.

This production route ensures stable concentration, consistent quality, and controlled impurity levels, which are essential for industrial users.

Industrial Applications

Caustic soda liquid is primarily selected for processes that operate continuously and require accurate chemical dosing.

• Water & Wastewater Treatment: pH adjustment, neutralization of acidic effluents

• Detergent & Cleaning Formulations: liquid detergents and industrial cleaners

• Oil, Gas & Petrochemical Processing: acid removal, line cleaning, refining processes

• Chemical Manufacturing: reactions requiring controlled alkalinity

• Pulp & Paper Industry: continuous chemical treatment of fibers

Comparison: Caustic Soda Liquid vs Caustic Soda Flakes

From an industrial and logistical perspective, caustic liquid and caustic soda flakes are not interchangeable products; each serves different operational requirements.

Caustic Soda Liquid is preferred when:

• Immediate use without dissolution is required

• Continuous or automated dosing systems are in place

• Precise concentration control is critical

• The operation is fixed-location (plant-based consumption)

Caustic Soda Flakes are preferred when:

• Long-distance transportation or export is involved

• Storage flexibility is required

• On-site dissolution is acceptable

• Lower logistics complexity is needed

In practical terms, liquid caustic soda reduces process preparation time, while flake caustic soda offers superior flexibility in storage and transport. Industrial buyers typically select the form based on process design, logistics infrastructure, and safety protocols, rather than price alone.

Packaging, Handling & Safety

Caustic soda liquid is supplied in:

• IBC tanks

• Bulk road tankers

• ISO tanks

As a corrosive substance (UN 1824 / Class 8), it requires compatible storage materials, closed transfer systems, and strict safety compliance during handling and transportation.

Caustic Soda Liquid Price

The price of caustic soda depends on NaOH concentration, order volume, packaging type, and current market conditions. Due to frequent market fluctuations, prices are not fixed.

For accurate daily pricing, available grades, and delivery terms, customers should contact Basekim directly to receive up-to-date commercial information.

FAQ – Frequently Asked Questions

1. What is caustic soda liquid used for?

Caustic soda is mainly used in water treatment, detergent manufacturing, petrochemical refining, pulp and paper processing, and chemical production.

2. What concentration of caustic liquid is most common?

The most commonly supplied concentration is 50% sodium hydroxide solution, although 30% and 32% are also widely used.

3. Is caustic liquid more dangerous than flakes?

Both forms are highly corrosive. However, liquid caustic soda requires special tanks and handling systems due to spill and splash risks.

4. What is the difference between caustic liquid and flakes?

Caustic soda liquid is ready to use and ideal for continuous processes, while flakes are solid and easier to store and transport for export.

5. How can I get the latest caustic soda liquid price?

For accurate and up-to-date pricing, it is recommended to contact Basekim, as prices vary depending on concentration, quantity, and market conditions.