Naphthalene Sulfonate Formaldehyde FND

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Naphthalene Sulfonate Formaldehyde (PNS)
(Na2SO4 ≤18%)

PNS, a high range water reducer with no air entraining component, is also named as Naphthalene Sulfonate Formaldehyde Condensate (NSF), SNF, PNS, etc.. It complies with chemical admixture specifications for concrete: ASTM C 494, Type F; ASTM C 1017.

1. PNS is suitable to make autotrophic concrete, steam curing concrete, steel concrete and prestress concrete, all of which are made mainly of portland cement.
2. PNS is applicable in areas with the daily lowest temperature of 0
and for making concrete which requires high fluidity, high strength or steam curing.
3. PNS can be used to make C80 concrete with slump loss between 50mm and 70mm, or C60 concrete with that between 180mm and 220mm.
4. PNS can be used as a raw material to compound accelerator, retarder, anti-freezing agent and pumping aid to satisfy requirements from different construction projects, techniques, materials and environmental temperatures.
5. PNS is compatible with Portland Cement, Portland Slag Cement, Fly-ash Cement, Portland Pozzolanic Cement, etc.




Visual Appearance

Light Brown Powder

Moisture, %

8.0 max

Fineness (0.315mm remains), %

15.0 max

pH value


Sodium Sulfate Content, %

18.0 max

Chloride Content, %


Surface Tension

68-72 Mn/m

Cement Paste Flow

230mm min

Water Reducing Rate

18% min

Steel-bar Corrosion


Features and Benefits
1. High water reducing rate: over 20%.
2. Saving cement without sacrificing slump retention and strength.
3. Good flowability.
4. Early and post strengthening ability.
5. Great compatibility with various types of cement.
6. Improved Compactness: it develops a better pore structure and makes the concrete more compact. It produces high durable concrete of which the anti-infiltrating index is beyond P18.

Uses and Dosages
It can be added during mix or after mix, while the afterward approach is preferential.
Dosage normally ranges from 0.5% to 1.0% by weight of cementitious material, while the recommended dosage is 0.75%.

It's packed in woven fabric bag with plastic liner. Net weight: 25kg.

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Q:Wall plastering works: why gypsum ash should not be wiped in the cement mortar layer
Because lime is a hard material, cement is a hydraulic material
Q:Building and decoration materials on the calculation of concrete mortar, urgent solution! The The The The The The The The
The concrete is the strength of the concrete, and the strength of the concrete is C20
Q:What is the difference between a waterproofing agent and a waterproof coating?
Waterproof coating is directly used for the construction of waterproof layer of waterproof slurry, such as the dragon one-component polyurethane waterproof coating directly open cans to form a waterproof layer; waterproof agent is the main field of tattoo fool algae add each other to the concrete, Cement mortar and other materials which increase its waterproof performance of a waterproof additive.
Q:Is the polymer cracked mortar and polymer bonded mortar the same?
5 Pu silicon cement, high-quality quartz sand, add imported polymer cement with a variety of additives, the double-axis mixture without gravity particles are mixed with powder building materials Polymer bonded mortar is a high molecular polymer cement based prefabricated dry mix Has excellent adhesion, good enhanced anti-droop, water retention, water resistance, aging resistance and operability Construction is simple, non-toxic pollution For the inside, the external walls and ceiling insulation board paste; can also be used for paste tiles, gypsum board and so on
Q:Building floor moisture, please tell me about the building floor moisture, mainly want to understand the capillary phenomenon of building materials and prevention.
060 elevation to do 20 thick cement waterproof mortar moisture barrier, when there is a concrete ring beam or connecting beam , Do not do the level of moisture-proof layer When the walls on both sides of the indoor floor is not equal, should be in the side of the filling as a vertical moisture-proof layer (with the former) and connect the two levels of moisture
Q:The following materials, is not commonly used in building mortar cementing material is ().
Answer: This is a building materials on the technical and performance of the title, the main assessment of commonly used building mortar using the knowledge of cementing materials
Q:I would like to use waterproof coating and mortar waterproof together to do bathroom waterproof can you? What kind of material with what?
Can ah ... it is a very good combination, the equivalent of just the length of the long Fu Fu Ying-hua bronze expansion. Waterproof paint, choose JS waterproof coating waterproof mortar, choose the market sales of waterproofing agent mixed with the home of the cement and sand mixed with the formation of waterproof mortar .. would like to ask, you are their own decoration? Is a simple bathroom, but the family has a bath what? If so, the developer has done a waterproof before the delivery, you can only choose a way. Pay attention to do 24h waterproof test, the general decoration workers will know to tell you.
Q:What is EVB insulation mortar? Heard a lot of counterfeit, in Guangxi, where can buy genuine,
It is an inorganic vitreous mineral material, through a special production process technology from the processing, physical and chemical properties and stability
Q:What is the usual leveling of the ground? By which type of work to complete?
As long as the basic level can be, and there is not a very good standard at all, in general, also by the tiling or the floor to sell the workers to complete
Q:Flexible waterproof layer of protective layer there are several? Rigid waterproof layer of protective layer and there are several?
There are three kinds of roof waterproofing program: membrane waterproof, rigid material waterproof, and waterproof coating. The coil should be called flexible waterproof rigid waterproof generally waterproof mortar and fine stone concrete layer protective layer is used to protect the coil, such as the aging problem of what the general superior roof selection rigid waterproof

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