China SNF Superplasticizer Manufacturer
As a state-owned enterprise, WOTAIchem specializes in manufacturing high-performance SNF superplasticizer (sulfonated naphthalene formaldehyde).
Our products have high water-reducing rate, outstanding enhancement effect. They give the concrete mix excellent fluidity, cohesiveness and water retention.
600,000-ton Annual Capacity>>
Backed by 5 large production lines and state-of-the-art facilities, we guarantee stable supply for bulk orders.
Rapid Delivery>>
90% of orders ship within 7 days, minimizing downtime. We work with trusted freight and logistics partners for reliable shipping.
Certified Quality>>
Compliant with ISO 9001, ISO14001 and ISO45001 standards, with 100% pure raw materials for consistent performance.
Naphthalene Superplasticizer (SNF/NSF/PNS Superplasticizer) for Concrete
The primary component of naphthalene superplasticizer is naphthalene sulfonate formaldehyde condensate, a high-efficiency water reducing agent widely used in concrete. It is also recognized as SNF (Sulfonated Naphthalene Formaldehyde), NSF (Naphthalene Sulfonate Formaldehyde), or PNS (Poly Naphthalene Sulfonate) superplasticizer.
WOTAIchem naphthalene based superplasticizer is compatible with other types of concrete admixtures. It offers a high water-reduction rate of 15%–25% and can enhance the early strength of concrete by 20%–60%. It reduces the water-to-cement ratio, increases concrete fluidity, and meets the requirements for pumpable concrete.
Product Overview
Product Introduction
Product Name: Sodium Naphthalene Sulfonate Formaldehyde
Synonyms: SNF Superplasticizer, Sulfonated Naphthalene Formaldehyde, Naphthalene Sulfonate Superplasticizer, SNF Powder, Poly Naphthalene Sulfonate, Naphthalene Water Reducer
Model: SNF-AP; SNF-AN
Appearance: Brown powder
Solid Content (%): ≥91
PH Value: 7-9
Chemical Formula: C₁₁H₉NaO₄S
CAS No.: 36290-04-7
HS Code: 38244010
Certificate: MSDS, ISO 9001, ISO14001, ISO45001, COA
SNF Powder Usage: Recommended blending dosage is 0.5%-1.0%, with 0.75% as the advised mixing dosage.
SNF - AP Naphthalene Superplasticizer
| Type | SNF – AP |
| Chemical Constitution | Pure naphthalene |
| Appearance | Brown powder |
| Active Ingredient Content | ≥92% |
| Fineness | ≤0.5% |
| Cement paste fluidity | ≥200mm |
| Sodium sulfate content | ≤5% |
| Water reduction rate | ≥18% |
| Chloride ion content | ≤0.5% |
| Surface tension | 70±2 mN/m |
SNF - AN Naphthalene Superplasticizer
| Type | SNF – AN |
| Chemical Constitution | Normal type |
| Appearance | Brown powder |
| Active Ingredient Content | ≥92% |
| Fineness | ≤0.5% |
| Cement paste fluidity | ≥200mm |
| Sodium sulfate content | ≤5% |
| Water reduction rate | ≥18% |
| Chloride ion content | ≤0.5% |
| Surface tension | 70±2 mN/m |
How Naphthalene Based Admixtures Improve Concrete Performance
Naphthalene based admixtures mainly contain naphthalene sulfonate formaldehyde condensate, which is synthesized by sulfonating naphthalene and condensing it with formaldehyde.
It acts as a powerful surfactant, with active groups that adsorb onto cement particle surfaces. This adsorption imparts the same charge to the particles, creating electrostatic repulsion that prevents agglomeration and keeps them uniformly dispersed.
A stable water film forms on the particle surfaces, enhancing lubrication and releasing free water. This reduces the required mixing water, lowers the water cement ratio, and ultimately improves both the strength and durability of concrete.
WOTAIchem - Naphthalene Superplasticizer Manufacturing Technique
We use 100% pure naphthalene material with no impurities added. The high purity of raw material ensures the stable performance of our SNF based admixture in concrete.
In specialized reactors, naphthalene undergoes a sulfonation reaction to form naphthalene sulfonic acid. Then reacts with formaldehyde to form naphthalene sulfonate formaldehyde condensate.
To maintain stability and consistency, we conduct regular quality checks every 2-4 hours on key production stages, including sulfonation, hydrolysis, and polymerization.
Comprehensive testingEvery batch of the final naphthalene sulfonate superplasticizer undergoes comprehensive testing for water reduction rate, solid content, and cement paste fluidity to ensure superior performance.
Your Reliable SNF Superplasticizer Factory
Experienced SNF Superplasticizer ExporterWOTAIchem operate 5 production lines in China, enabling us to efficiently handle both small-batch and large-volume orders with fast delivery within 1-2 weeks.
Strict Quality ControlOur specially designed reactors and optimized hydrolysis stage precisely control temperature and duration.
The advanced filtration ensure high purity concrete admixture naphthalene water reducers.
OEM SNF SuperplasticizerWhether you need a specific level of water reduction or tailored setting properties, we can deliver. We also customize molecular structures for optimal compatibility with your unique concrete formulations.
Flexible Pricing StrategyWe tailor our pricing system based on order size and partnership duration. For bulk purchases, we offer a tiered discount structure—the larger the order, the lower the unit price.
Comprehensive ServiceWe offer free trial samples, small-scale testing, small-batch orders, and large-volume orders to meet various customer needs. Our goal is to deliver seamless support at every stage.
Get a Free Sample of Naphthalene Superplasticizer!
Are you facing these challenges?
❌ Low concrete slump, reducing construction efficiency
❌ High water-cement ratio, leading to substandard structural strength
❌ Rising material costs, squeezing your profit margins
Apply now and enjoy three exclusive benefits:
✅ Free Sample: Choose 200g or 400g of naphthalene based superplasticizer powder per bag
✅ Technical Support: One-on-one mix design guidance from an expert engineer
✅ Fast Delivery: FedEx or DHL express shipping straight to your doorstep
Save up to 15% on costs & boost concrete strength by 20%-60%!
One-Stop Concrete Solutions
WOTAIchem specializes in manufacturing a wide range of concrete admixtures, including accelerating admixtures, water-reducing admixtures, superplasticizers, concrete thickeners, water-retaining agents and various concrete fibers.
Our concrete admixtures are designed for excellent compatibility, allowing them to work seamlessly with other types of admixtures.
In complex admixture systems, each component plays its role effectively, helping you formulate high-performance concrete with optimal properties.
Choosing the Appropriate Water Reducer: Naphthalene vs. Polycarboxylate
As a second-generation water reducer, naphthalene superplasticizer delivers high water reduction, excellent cost efficiency, and strong adaptability across various projects. They are produced with mature technology using readily available raw materials and maintain stable performance even in high temperature conditions, making them ideal for traditional concrete applications.
For projects demanding higher slump retention and more precise control of concrete flow, our third-generation polycarboxylate superplasticizers offer advanced performance and customization options.
Both naphthalene and polycarboxylate water reducers can be custom-blended to perfectly match your project’s strength, workability, and economic requirements. Contact us to find the best solution!
- To learn more about how naphthalene and polycarboxylate water reducers differ in strength development, see our in-depth blog article: Strength Comparison of Naphthalene and Polycarboxylate Types.
WOTAIchem Contributes to the Sustainable Development of SNF Superplasticizer Market
As a professional supplier specializing in high-purity SNF powder, WOTAIchem is dedicated to sustainable developoment. Our products are comply with green building standards and exported to over 50 global construction companies.
The global SNF powder market is expected to account for approximately 65% of the total market share in the next ten years. By prioritizing environmental responsibility and innovation, WOTAlchem actively contributes to the sustainable growth of the superplasticizer market!
Sodium Naphthalene Sulfonate Uses
Ready-mix concretePNS superplasticizer can maintain the workability of concrete mixtures, ensuring good fluidity and workability during transportation and pouring.
Different types of concreteIdeal for high-strength concrete (eg. C60 and above), high-performance concrete, steam-cured concrete and high-fluidity concrete.
High-slump on-site pumpable concreteEnables the preparation of high-slump on-site pumpable concrete, making it an excellent pumping type naphthalene superplasticizer.
Winter concrete applicationsWOTAIchem superplasticizer based on naphthaleneis especially suitable for winter concrete applications.
Mortar
Engineering constructionWidely used in highways, bridges, dams, ports, tunnels, power plants, water conservancy projects, and civil engineering construction.
Naphthalene superplasticizer - Packaging
> 25kg/bag
Avoid moisture, keep the surrounding environment dry, ensure good ventilation, strictly prohibit open flames, and avoid mixing with other substances.
> Also available in customized volumes.
> 12 tons per small container; 26 tons per large container
CONCRETE ADMIXTURES
Significantly shortens production cycles and boosts manufacturing efficiency.
Enhances crack resistance, durability, and overall stability of concrete.
Prevents frost heaving and cracking, ensuring concrete quality in cold conditions.
Greatly reduces curing time, increases early strength, and improves durability.
Significantly increases compressive strength, enhances durability, and optimizes microstructure.
Effectively repairs cracks, restores structural integrity, and improves waterproofing and impermeability.
Related Products
FAQ
Have any questions? We are always here to help you.
Naphthalene sulfonate (commonly referring to naphthalene sulfonic acid formaldehyde condensate) is one of the most widely used high range water reducers in concrete.
In concrete applications, it disperses cement particles through electrostatic repulsion, releasing free water and significantly reducing water demand (typically achieving a 15%-25% water reduction rate).
Its performance is essential in construction, from residential buildings (slabs, beams, columns) to large-scale infrastructure projects such as bridges and dams.
Advantages of using poly naphthalene sulfonate in concrete
✅Low raw material cost and high cost-effectiveness
✅Significant strength enhancement: Can improve concrete strength by 20%-60%, making it particularly suitable for high-strength concrete
✅Wide application range: Suitable for both general and specialized construction projects, demonstrating stable performance across various climatic conditions and construction environments. It is widely used in ready-mix concrete, precast concrete production, and on-site mixing.
Concrete superplasticizer: Enhances workability and flowability of concrete while reducing water demand, lowering the water-cement ratio, increasing concrete strength and durability, and saving cement.
Dye intermediate: Used in the synthesis of dyes and pigments, enabling the production of various colored dyes through a series of chemical reactions.
Dispersing agent: Used in coatings, ceramics, pesticides, and other industries to prevent particle aggregation.
Surfactant: Exhibits excellent surface activity, serving as a component in detergents, emulsifiers, and dispersants.
Petroleum industry: Acts as an oil displacement agent, improving crude oil recovery.
Paper industry: Used as a pulp dispersant, ensuring uniform fiber distribution and improving paper quality and consistency.
A naphthalene-based admixture refers to a class of functional compounds derived from naphthalene through chemical modification (such as sulfonation and condensation). Examples include:
▪️Naphthalene-1-sulfonic acid and naphthalene-2-sulfonic acid:
Two isomers of sulfonated naphthalene commonly used in the synthesis of naphthalene-based superplasticizers.
▪️Through condensation reactions, these sulfonated naphthalenes combine with formaldehyde to form high-molecular-weight polymers (i.e., Poly Naphthalene Sulfonate Superplasticizers), which significantly enhance concrete flowability and strength.
In summary, naphthalene superplasticizers are primarily naphthalene derivatives (such as sulfonates and condensates) with extensive applications in construction materials and chemical industries, with naphthalene sulfonate superplasticizer being a prime example.
High-range water reducers are one of the most important admixtures in concrete. They are used to reduce the water content in concrete, increase its strength, and improve workability.
Below are the main types of high-range water reducers and their characteristics:
| Common Types | Water-Reducing Rate | Slump Retention | Cost | Main application |
| Naphthalene Based Superplasticizer | 15%-25% | Requires retarder | Low | High-strength concrete, pumped concrete |
| Polycarboxylate Superplasticizer | 25%-40% | Good | High | High-performance concrete, super high-rise buildings |
| Melamine Super Plasticizer (SM) | 20%-30% | Requires retarder | Medium | High-strength concrete, precast components |
| Lignosulfonates | 5%-10% | General | Low | Ordinary concrete, low-cost projects |
The core raw material of naphthalene superplasticizers is naphthalene sulfonate formaldehyde condensate (SNF). Its production process mainly involves the sulfonation reaction of naphthalene followed by a condensation reaction. Below is the mechanism of the naphthalene sulfonation reaction and its key steps.
1. What Is the Naphthalene Sulfonation Reaction?
The naphthalene sulfonation reaction involves mixing naphthalene (a chemical raw material) with concentrated sulfuric acid to produce naphthalene sulfonic acid. This is the first step in the production of poly naphthalene sulfonate.
2. How Does the Reaction Occur?
Step 1: Concentrated sulfuric acid becomes a highly reactive species (called an electrophile).
Step 2: This electrophile attacks the naphthalene molecule, attaching to a specific position on the naphthalene ring.
Step 3: The naphthalene molecule loses a hydrogen atom, forming naphthalene sulfonic acid.
3. Reaction Sites
There are two main positions in the naphthalene molecule that are prone to electrophilic attack:
▪️At low temperatures, the reaction primarily forms 1-naphthalenesulfonic acid.
▪️At high temperatures, the reaction mainly yields 2-naphthalenesulfonic acid.
Since 1-naphthalenesulfonic acid is more reactive in the next step, it is the preferred intermediate for producing poly naphthalene sulfonate superplasticizer.
You may refer to the blog – Differences between Plasticizer and Superplasticizer: 5 Vital Distinctions in Concrete Enhancement for more detaile information.
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