pH & Alkalinity Control

Caustic Soda (Sodium Hydroxide)

Premium-grade Caustic Soda for water treatment, designed to deliver precise pH adjustment, alkalinity restoration, heavy metal precipitation, and acid neutralization in municipal and industrial systems.

NaOHChemical Formula
99%Purity
14pH Range
50%Liquid Grade

Strong Alkali for Reliable Water Treatment Performance

Caustic Soda, chemically known as Sodium Hydroxide (NaOH), is one of the most versatile and widely used alkaline chemicals in the water treatment industry. Also commonly referred to as lye, it serves as a cornerstone for pH adjustment, alkalinity enhancement, and metal precipitation processes.

At HYDROCHEM FOR RETAIL SALE OF CHEMICALS, we supply high-purity Caustic Soda in multiple forms — flakes, pearls, and 50% liquid solution — manufactured through the advanced chlor-alkali membrane cell process. This ensures minimal impurities, consistent concentration, and superior performance across municipal drinking water plants, industrial wastewater facilities, and process water systems.

High-purity grade improves pH control, lowers corrosion risk, and supports dependable treatment outcomes across municipal and industrial systems.

pH Adjustment

Rapidly elevates pH to optimal ranges for disinfection, corrosion control, and compliance performance.

Metal Precipitation

Converts dissolved metals into insoluble hydroxides for removal through settling or filtration.

Acid Neutralization

Neutralizes acidic industrial effluent streams before discharge or further treatment.

Chemical and Physical Properties

Sodium Hydroxide is a strong base with a pH of approximately 14 in concentrated form. It is highly soluble in water, releasing significant exothermic heat upon dissolution, making it a highly reactive and effective water treatment alkali.

Molecular Formula

NaOH — a strong inorganic alkali used for precise pH and alkalinity correction.

Molecular Weight

40.00 g/mol, supporting predictable dosage and treatment performance.

Appearance

White deliquescent flakes or pearls; clear, viscous liquid in 50% solution form.

Physical Data

Specific gravity 1.53 at 20°C and boiling point of ~142°C for 50% solution; low impurity levels ensure treatment stability.

How Caustic Soda Works in Water Treatment

Caustic soda neutralizes acidity, raises alkalinity, and precipitates dissolved metals, creating a cleaner and more stable water matrix.

01

pH Control

Raises pH to the range required for disinfection, corrosion control, and regulatory compliance.

02

Alkalinity Restoration

Replenishes alkalinity in treated or acidic water systems to stabilize downstream operations.

03

Metal Hydroxide Formation

Converts dissolved metal ions into insoluble hydroxides for removal through solids separation.

04

Neutralization

Balances acidic effluent streams from industrial processes before discharge or polishing.

05

Process Enhancement

Improves coagulation efficiency and downstream water quality when used with common coagulants.

Caustic Soda improves water chemistry by stabilizing pH and managing dissolved contamination, resulting in safe, compliant, and treatable water.

Operational Advantages

Our Caustic Soda is high in reactivity and purity, which means lower dosage requirements and reduced sludge generation in many water treatment systems.

Fast pH Stabilization

Brings treated water quickly to the target range for consistent process control.

Lower Sludge

Improves precipitation efficiency and reduces unnecessary solids formation.

Industrial Versatility

Supports both drinking water and wastewater processes, as well as chemical manufacturing.

Cold-Climate Flexibility

20–25% solutions can be recommended to avoid crystallization in cooler environments.

Easy Dosing

Available in liquid, flakes, and pearls for automated or manual dosing systems.

Corrosion Control

Helps protect distribution and process systems by balancing pH and alkalinity.

Environmentally Manageable

Suitable for responsible neutralization and compliant discharge management.

Regulatory Ready

Meets standards suitable for drinking water treatment and municipal compliance programs.

Technical Applications in Water Treatment

Caustic Soda plays several critical roles in water and wastewater treatment, from pH adjustment to metal removal and neutralization of acidic streams.

pH Adjustment and Alkalinity Restoration

Used to raise the pH of raw or treated water into the ideal 6.5–8.5 range for disinfection, corrosion control, and regulatory compliance.

Heavy Metal Removal

Precipitates metals such as zinc, copper, nickel, chromium, and lead as insoluble hydroxides for removal by sedimentation and filtration.

Water Softening Support

Complements lime-soda ash softening for magnesium and silica removal in treatment systems.

Production of Treatment Chemicals

Acts as a key raw material in generating sodium hypochlorite, sodium aluminate, and related treatment products.

Neutralization of Acidic Effluents

Effectively neutralizes industrial wastewater streams before final discharge or recycle.

Municipal and Process Water Systems

Suitable for drinking water plants, industrial cooling loops, boiler feed systems, and wastewater treatment operations.

Why Choose Our Caustic Soda

Our premium-grade product gives cleaner generation and more precise treatment performance across municipal and industrial treatment operations.

Accurate pH Control

Enables precise adjustment to optimize disinfection and corrosion prevention.

Heavy Metal Removal

Helps convert dissolved metals into removable solids through hydroxide precipitation.

Low Impurity Profile

Manufactured to minimize chlorides, carbonates, and heavy metals for sensitive applications.

Multiple Forms

Available as flakes, pearls, and 50% liquid solution to suit dosing and storage needs.

Operational Flexibility

Works in both manual and automated dosing systems across water treatment sites.

Safety Support

Backed by technical guidance for safe storage, handling, and emergency response.

Regulatory Confidence

Designed for compliance with AWWA B501, NSF/ANSI 60, and related standards.

Efficient Use

High reactivity means lower chemical consumption and strong performance per dose.

Safe Use, Storage, and Environmental Considerations

Caustic Soda is a highly corrosive substance and requires appropriate PPE, emergency showers, and eyewash stations. Our technical team provides handling guidelines, compatibility charts, and training for safe application. Environmentally, it is an inorganic compound that does not bioaccumulate; however, responsible use and neutralization are essential to minimize impact on receiving waters. Our products comply with AWWA B501, NSF/ANSI 60, and relevant local regulations.

Need a Reliable Caustic Soda Supply for Your Water Treatment Plant?

Our technical team can help specify the correct form, concentration, and dosing strategy for your treatment process, compliance target, and operational environment.