Sodium naphthalene sulfonate formaldehyde SNF/ FDN/ PNS/ NSF

The company mainly produces Naphthalene-based high-efficiency water reducing agent series products, mainly including SNF-A, SNF-B and SNF-C types . Our company’s product is β-naphthalene sulfonate sodium formaldehyde condensate, which is easily soluble in water, has stable physical and chemical properties and good effects. It is a high-performance water-reducing agent.

It has the characteristics of high dispersion, low foaming, high water reduction rate, strength, early strength, excellent reinforcement, and strong adaptability to cement. Incorporating this product greatly enhances the fluidity of concrete, increases slump, and improves workability and construction performance.

The product is non-corrosive to steel bars. It is widely used in various concrete projects, component prefabrication, sleepers, bridges, tunnels, water conservancy and electric power projects, and high-rise building projects.

Specification of Sodium Naphthalene Sulfonate

Product Name: Sodium Naphthalene Sulfonate Formaldehyde CAS No.: 36290-04-7
Abbreviations: SNF/FDN/PNS/NSF/ SNF-A B C; MF: C11H9NaO4S
Other Names: Sodium naphthalene sulfonate formaldehyde condensate;

Concrete Superplasticizer;

High Range Water Reducer;

Concrete Water Reducing Admixture SNF; SNF Powder;

Model Number: SNF-A (reducing 15%)

SNF-SCC (reducing 18%)

SNF-C (reducing 23%)

Appearance: Brown Powder Type: Superplasticizer
Certificate: ISO9001 Solid Content: ≥91%
MOQ: 16 Metric Tons Grade Standard: Tech Grade
Usage: Concrete additive; Gypsum board additive; Coal water slurry additive; Shelf Life: Two Years

Technical Data of Sodium Naphthalene Sulfonate

Assay (%) ≥




Sodium sulfate Na2SO4(%)≤ 5 10 18
Content of CI(%)≤ 0.3 0.4 0.5
Net starch fluidity (mm) ≥ 250 240 230
Reducing rate (%) 26 25 23

The Functions of Sodium Naphthalene Sulfonate

  • Improve the performance of concrete. Adding it to concrete improves the ease of use of the concrete.
  • Good adaptability. Naphthalene sulfonate has good adaptability to many types of cement and is compatible with other types of concrete additives.
  • As a water-reducing agent, it can improve the water-reducing rate. When the water-cement ratio is constant, the initial slump of concrete can increase by more than 10cm, and the water reduction rate can reach 15-25%.
  • Increase the early strength of concrete. As long as it is used, the strength of concrete can be increased by 20-60%.
  • Good safety. Not irritating or radioactive, not dangerous.
  • Set the time appropriately. In other words, it has little effect on the initial and final setting times of cement.
  • Reduce cement amount. If the concrete strength and slump are basically the same, the amount of cement can be reduced by 10-25%.

Instructions for Using Sodium Naphthalene Sulfonate

  • The amount of SNF powder added is 0.5% to 1% of the weight of the cementitious material.
  • 0.5%~0.75% naphthalene-based water reducing agent can be added to save cement and improve the workability of concrete. Add 0.75%~1.2% when preparing high-grade concrete and prestressed high-grade concrete.
  • Add naphthalene-based superplasticizer powder and concrete components at the same time, and the mixing time will be extended by half a minute.
  • To prepare naphthalene sulfonate as a liquid, the concrete should be stirred for a period of time before being added to the concrete. This enables snf naphthalene to give concrete better technical effects.
  • This product can also be used in conjunction with other concrete admixtures that comply with national standards. If porous aggregate is used, please add water first and then the water reducing agent. When the slump is large, attention should be paid to the vibrating time not to be too long to prevent bleeding or delamination.
  • Keep away from moisture when storing. If it agglomerates when exposed to moisture, it must be dissolved with hot water and then added together with the concrete mixing water, and the water must be deducted.
  • When the concrete needs to be transported for a long time or when a mixer truck is used, it is a good method to mix the concrete and sodium naphthalene sulfonate before use.

Sodium Naphthalene Sulfonate Produced by Bailin Group

  • One of the largest manufacturer of SNF in Asia with 90,0000 Tons capacity per year.
  • Free sample can be provided.
  • Delivery time is fast about 7 days after order confirmation.
  • The raw material is also produced ourself,so we can supply the lowest price and stable quality.
  • We also produce sodium gluconate,we can supply SNF and Sodium Gluconate together,in this way,you can save cost. and time.
  • Packing : 25 kgs / 600 kgs / 650 kgs or 700 kgs one bag with PE film inside,also based on your requirement with pallet.