Sodium Naphthalene Sulfonate Formaldehyde FDN (Na2SO4 ≤5%) for Concrete Admixture

short description:

1. Sodium naphthalene sulfonate formaldehyde FDN is also called naphthalene based superplasticizer, poly naphthalene sulfonate, sulphonated naphthalene formaldehyde. Its appearance is the light brown powder. SNF superplasticizer is made of naphthalene, sulfuric acid, formaldehyde and liquid base, and undergoes a series of reactions such as sulfonation, hydrolysis, condensation and neutralization, and then dried into powder.

2. Naphthalene sulfonate formaldehyde is commonly referred to as a superplasticizer for concrete, so it is especially suitable for the prepatation of high- strength concrete, steam-cured concrete, fluid concrete, impermeable concrete, waterproof concrete, plasticized concrete, steel bars and prestressed reinforced concrete. In addition, sodium naphthalene sulfonate formaldehyde can also be used as a dispersant in the leather, textile and dye industries, etc. As a professional manufacturer of naphthalene superplasticizer in China, Longou always provides high quality SNF powder and factory prices for all the clients. 

Product Detail

Product Tags

Product Description

SNF-A is an chemical synthesis, non-air entraining superplasticizer. Chemical name: naphthalene sulfonate formaldehyde condensation, it has a strong dispersion of cement particles.

Naphthalene superplasticizer SNF-A (2)

Technical Specification

Name Naphthalene based superplasticizer SNF-A
CAS NO. 36290-04-7
HS CODE 3824401000
Appearance Brown yellow powder
Net starch fluidity (㎜) ≥ 230 (㎜㎜)  
Content of chloride (%) < 0.3(%)
PH  value 7-9
Surface tension (7 1 ± 1) × 10 -3(n/m)
Na 2 SO 4 content < 5(%)
Water reduction ≥14(%)
Water penetration ≤ 90(%)
AIR content ≤ 3.0(%)
Package 25(Kg/bag)


➢ Good adaptability to all kinds of cement, improve the operability of concrete, widely used in roads, railways, Bridges, tunnels, power stations, DAMS, high-rise buildings and other projects.

1. Blending dosage at 0.5%-1.0%,0.75% mixing dosage advised.

2. Prepare solutions as required.

3. Direct use of powder agent is allowed,alternatively the addition of the agent is followed by water moisturization(water-cement ratio:60%).

Drymix admixture

Main Performances

➢ SNF-A can impart mortar quick plasticizing speed, high liquifying effect, low air entraining effect.

➢ SNF-A is of good compatibility with various kind of cement or gypsum binders, other additives such as de-foaming agent, thickener, retarder, expansive agent, accelerator etc.

➢ SNF-A is suitable for tile grout, self-leveling compounds, fair-faced concrete as well as colored floor hardener.

Product Performance

➢ SNF can be used as wetting agent for dry mix mortar to obtain good workability.

Storage and delivery

It should be stored and delivered under dry and clean conditions in its original package form and away from heat.After the package is opened for production,tight re-sealing must be taken to avoid ingress of moisture.

 Shelf life

Shelf life 10 months. Use it as early as possible under high temperature and humidity, so as not to increase the probability of caking.

 Product safety

Naphthalene based superplasticizer SNF-A  does not belong to hazardous material.Further information on safety aspects is given in Material Safety Data Sheet.

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