For industrial buyers, choosing a Caustic Soda Liquid supplier is often less about simply purchasing an alkaline chemical and more about matching concentration, impurity control, packaging, delivery conditions, and production requirements. Different manufacturing processes may require different alkali concentrations, and using a suitable concentration can reduce unnecessary dilution, simplify dosing, and improve process control.
AOLANSU provides industrial sodium hydroxide solutions for chemical manufacturing, textile processing, water treatment, papermaking, petroleum processing, and other industrial applications. The product is manufactured using ion-exchange membrane electrolysis technology and is available in several concentration options, including 30%, 32%, 48%, and 50%, with customized specifications available according to customer requirements.
One of the most important purchasing decisions for liquid sodium hydroxide is selecting the appropriate concentration. The required concentration depends on the production process, dosing equipment, reaction conditions, storage temperature, transportation distance, and whether dilution is already included in the customer's process.
Solutions around 30% can be suitable for applications where controlled alkali addition is required and the production system benefits from easier handling and metering. Water treatment, wastewater neutralization, and selected chemical processes may use lower-concentration solutions to achieve precise pH adjustment without excessive reaction intensity.
A 32% solution can provide a practical balance between alkali concentration and process handling. It can be considered for textile processing, chemical manufacturing, and other applications where stable alkaline conditions are required while maintaining convenient pumping and dosing characteristics.
Concentrations such as 48% and 50% contain a higher proportion of active sodium hydroxide, which can reduce the amount of water transported per unit of active alkali. This may be advantageous for large-volume industrial buyers with suitable storage tanks and dosing systems.
Before placing an order, buyers should therefore evaluate active alkali demand rather than comparing the purchase price per ton alone. Transportation, storage capacity, dilution requirements, and dosing efficiency can all influence the actual procurement cost.
In continuous manufacturing, changes in alkali concentration or impurity levels can affect reaction conditions, wastewater loading, surface treatment results, and downstream product quality. For this reason, batch-to-batch consistency is an important part of supplier qualification.
AOLANSU uses ion-exchange membrane electrolysis and subsequent purification procedures to control the composition of the finished material. Typical quality indicators include sodium hydroxide concentration, chloride ions, iron ions, and other relevant impurities.
The general product purity is ≥99%, while concentration specifications can be arranged at 30%, 32%, 48%, or 50%. For customers with special process requirements, the technical team can discuss concentration and impurity specifications before production.
Each production batch is subject to quality inspection before shipment. Concentration accuracy and key impurity indicators are checked against the agreed specification, and a Certificate of Analysis can be provided to support customer-side incoming inspection.
This documentation is particularly useful for manufacturers operating multiple production lines or purchasing chemicals from several locations because it provides a clearer basis for batch comparison and material traceability.
In chemical production, sodium hydroxide serves as a basic raw material, neutralizing agent, saponification reagent, and process auxiliary. It can be used in the production of surfactants, dyes, pharmaceutical intermediates, pesticides, sodium salts, and other chemical products.
Case Study: A dye factory in Southeast Asia replaced an ordinary alkaline material with AOLANSU's 50% high-purity solution. After process adjustment, dye color brightness increased by 15%, side reactions decreased, wastewater color was reduced, and the customer's annual overall operating cost was reduced by approximately 8%.
Alkaline treatment is widely used in textile preparation and finishing. Sodium hydroxide can support desizing, scouring, mercerization, and related processes by removing impurities and modifying fiber characteristics.
Case Study: A large Turkish textile group adopted a customized 32% concentration solution for mercerizing treatment. Fabric gloss increased by 20%, the first-grade dyeing rate improved from 92% to 98.5%, and the wastewater treatment load was reduced.
For wastewater treatment plants, the primary requirement is often accurate and stable pH adjustment rather than simply achieving the highest possible alkali concentration. Liquid sodium hydroxide can be metered directly into treatment systems, making it suitable for neutralizing acidic wastewater and supporting the precipitation of certain metal ions.
Case Study: A petrochemical wastewater project in the Middle East used AOLANSU's 30% solution for controlled pH adjustment. The heavy metal removal rate remained stable at 99.9%, while reagent consumption was approximately 12% lower than with the customer's previous caustic soda material. The treatment system continued to pass environmental inspections.
In papermaking, sodium hydroxide is used during pulping and fiber treatment to help separate lignin and other unwanted components from raw materials. Proper alkali concentration can influence pulp quality and the efficiency of subsequent processing steps.
Petroleum processing may use sodium hydroxide for selected deacidification and refining operations, while metal-processing plants can use alkaline solutions for degreasing and surface preparation. The required concentration should be determined according to the specific process and equipment conditions.
| Parameter | Specification |
|---|---|
| Product Name | Caustic Soda Liquid / Sodium Hydroxide Solution |
| CAS No. | 1310-73-2 |
| Chemical Formula | NaOH |
| General Purity | ≥99% |
| Available Concentrations | 30%, 32%, 48%, 50% |
| Concentration Tolerance | Typically within ±0.5%, subject to agreed specification |
| Appearance | Colorless to transparent viscous liquid |
| Chloride Ion Content | ≤0.03% |
| Iron Ion Content | ≤0.001% |
| Density at 20°C | Approximately 1.14–1.53 g/cm³, depending on concentration |
| Alkalinity | Strong alkaline characteristics |
| Packaging | 200kg corrosion-resistant plastic drums, 1000kg IBC tanks, bulk tankers |
| UN Number | 1823 |
For factories using sodium hydroxide on a continuous basis, the key concern is not only chemical quality but also how the material fits into the existing dosing, storage, and production system. A suitable concentration can help reduce unnecessary preparation steps and make alkaline addition more consistent.
Caustic Soda Liquid can be transferred through pumps and metering systems, making it suitable for production lines that require continuous or controlled alkaline dosing. Compared with solid caustic soda, the liquid form eliminates the need for manual dissolution before use, which can simplify material preparation and reduce handling steps.
Different production systems may require different alkali concentrations. Lower-concentration solutions can be considered where frequent and precise dosing is required, while higher-concentration solutions may be preferred when the production system is designed for concentrated chemical storage and controlled dilution.
Before purchasing, buyers should evaluate pump capacity, pipeline compatibility, storage tank volume, dosing accuracy, and the required daily consumption. This helps ensure that the selected concentration works efficiently with the existing production equipment.
For factories that previously used solid sodium hydroxide, switching to a liquid supply can reduce the need for weighing, dissolving, and transferring solid material. This can be particularly useful for wastewater treatment, chemical production, textile processing, and other operations requiring frequent alkali addition.
Industrial buyers can calculate purchasing quantities according to daily or monthly sodium hydroxide consumption rather than ordering solely by container capacity. Combining concentration, storage capacity, dosing rate, and production schedule helps reduce unnecessary inventory while maintaining sufficient material for continuous operation.
Caustic Soda Liquid are strongly corrosive. Operators should follow the supplier's SDS and site-specific chemical safety procedures during unloading, transfer, dosing, maintenance, and emergency response.
Suitable chemical-resistant gloves, protective clothing, eye protection, and face protection should be selected according to the workplace risk assessment. Emergency eyewash and shower facilities should be available in areas where accidental exposure may occur.
AOLANSU holds a Hazardous Chemical Business License and provides safety documentation to support customer chemical-management procedures. Buyers should always review the current SDS before transportation, storage, and use.
For industrial chemical procurement, supplier value is determined by more than the product quotation. Concentration accuracy, impurity control, production continuity, packaging suitability, documentation, and delivery coordination can all affect the total cost of ownership.
AOLANSU provides multiple sodium hydroxide concentrations from its China manufacturing and supply system, allowing buyers to select a specification based on actual process requirements rather than using a one-size-fits-all solution.
With factory production support, laboratory quality inspection, hazardous chemical operating qualifications, export documentation, and international logistics coordination, AOLANSU is positioned to support both trial procurement and long-term industrial supply programs.
The appropriate concentration depends on your dosing system, active alkali requirement, storage conditions, transportation cost, and whether dilution is required before use. AOLANSU commonly supplies 30%, 32%, 48%, and 50% solutions and can discuss the suitable specification according to the application.
Yes. Concentration customization can be discussed according to the customer's process requirements. The agreed specification and acceptable concentration tolerance should be confirmed before production.
Each shipment can be accompanied by a COA showing the tested quality parameters. Buyers can compare the COA results with their approved purchasing specification and perform additional incoming inspection when required.
IBC tanks and bulk tanker delivery are generally more suitable for customers with established chemical storage and transfer systems, while drums can be considered for smaller quantities or sites without bulk storage facilities.
Industrial-grade sodium hydroxide should not automatically be used for food-contact applications. Food-processing applications require a grade specifically manufactured, tested, and documented for the applicable food regulations. Buyers should confirm the required grade with AOLANSU before placing an order.
Yes. AOLANSU supports international chemical procurement with SDS, COA, export documentation, hazardous chemical-related qualification documents, and logistics coordination. The final transportation arrangement must comply with the regulations of the destination country and transport route.
For buyers evaluating liquid sodium hydroxide suppliers, AOLANSU can provide concentration options, technical specifications, packaging information, COA and SDS documentation, and shipment arrangements according to the project requirements.
Contact AOLANSU to discuss your required concentration, annual consumption, packaging preference, destination, and application conditions.
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(North of Dongwei Group, West) Houwei Village, Changshan Town, Zouping City, Binzhou, Shandong Province, China
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