Why buyers specify NaOH
High alkalinity per unit volume, predictable dosing response, and compatibility with automated metering systems. Suitable for continuous pH control loops and batch neutralization tanks.
Product Water Treatment
pH Adjuster (Sodium Hydroxide Solution)
Strong alkalinity source used for pH control, neutralization, and alkalinity addition in municipal and industrial water treatment. Supplied in multiple concentrations and packaging formats to support continuous dosing programs and repeat procurement.
Common concentrations: 25% • 30–32% • 45–50% (w/w, per lane)
Packaging: drums / IBC / bulk (as applicable)
Documentation: SDS / COA / TDS on request
Lead time depends on origin, lane, and volume
Commercial overview
Sodium hydroxide solution (commonly “caustic soda”) is a standard neutralization chemical for water and wastewater facilities. It is frequently selected where precise, automated pH control is required and where an alkalinity boost supports downstream treatment (coagulation, biological treatment stability, corrosion control programs, or discharge compliance).
Procurement-ready supply
Multiple concentrations and packaging options (drum/IBC/bulk) to match your storage and unloading capabilities. Documentation pack (SDS/COA/TDS) available for tendering and audit needs.
Operational value
Supports stable process control, reduces excursions, and helps maintain consistent downstream performance (clarifiers, filters, biological units, and discharge limits).
Note
Final dosing depends on influent alkalinity, buffering capacity, target pH, temperature, and mixing—confirm with site trials and control tuning.
Applications
Typical usage patterns. Tell us your process and constraints and we’ll align the right specification.
- Wastewater pH neutralization (acidic influent, discharge compliance)
- Alkalinity addition to support coagulation/precipitation programs (site-dependent)
- Industrial process water pH control (utilities, make-up water, recycling loops)
- CIP and cleaning programs where caustic dosing is required (process-dependent)
- Regeneration/conditioning support in specific treatment trains (case-dependent)
Typical dosing modes
Continuous metering to a control loop, or batch dosing to a neutralization tank with mixing and pH feedback.
Where it performs well
Fast pH correction and consistent response in automated systems when mixing and sensor placement are optimized.
Process considerations
Influent buffering, temperature, and mixing energy can affect response time and chemical consumption.
Typical specifications & formats
Values depend on grade and customer requirements. Confirm details on quotation.
Chemical
Sodium Hydroxide Solution (NaOH)
Typical concentrations
25% • 30–32% • 45–50% (w/w, lane-dependent)
Appearance
Clear, colorless liquid (typical)
Packaging
Drums, IBC, bulk (as applicable)
Documentation
SDS + COA on request • TDS available • labeling support
Handling notes
Corrosive alkali—use PPE and compatible equipment; keep away from acids and reactive metals.
Guide range table (illustrative)
Final values are grade-dependent and confirmed on batch COA.
| Parameter | Typical guide | Why it matters |
|---|---|---|
| NaOH concentration (w/w) | 25% / 30–32% / 45–50% | Affects storage volume, pump sizing, and heat of dilution |
| Appearance | Clear liquid | Cloudiness can indicate contamination or precipitates |
| Typical use | pH control / neutralization | Setpoints and dosing depend on buffering capacity |
| Packaging | Drums / IBC / bulk | Select based on unloading (pump/air) and storage constraints |
Engineering tip
For pH control loops, improve stability by optimizing mixing, injection point, and sensor placement—this can reduce chemical consumption and excursions.
Specifications may vary depending on batch, origin, and packaging selection.
Safety, storage & handling
Sodium hydroxide solution is corrosive and can cause severe burns. Handle only with suitable PPE and trained personnel. Follow the SDS and your site chemical handling procedure.
PPE
Chemical-resistant gloves, eye/face protection, and protective clothing as required by SDS.
Storage
Keep sealed and protected from contamination. Avoid incompatible chemicals (acids) and reactive metals.
Dilution
Always add caustic to water (not water to caustic). Heat is generated—control dilution rate and mixing.
Important
Mixing NaOH with acids is strongly exothermic. Keep separate storage and use dedicated transfer equipment.