top of page

Naphthalene Sulfonate Formaldehyde Sodium salts


Naphthalene Sulfonate Formaldehyde Sodium salts,also names poly naphthalene sulfonate(PNS),sulfonated naphthalene formaldehyde condensate sodium salts, naphthalene sulfonate formaldehyde condensates sodium salts, sodium naphthalene sulfonate formaldehyde condensates(SNF),naphthalene sulfonate formaldehyde,etc.


It is produced in liquid and powder form,brown color,with a special smell,it can improve concrete performance by dispersing cement particles and thus,improving concrete workability and compressive it is used as raw material for the production of concrete admixtures for ready mixed concrete or mortars.



SNF(PNS) is used as a superplasticizer in the production of free flowing concrete for use in :

Slabs and foundations

Walls, columns and piers.

Slender components with densely packed reinforcement.

Textured surface finishes.


SNF(PNS) is also used as a water-reducing agent leading to high early strength concrete for use in :

Pre-cast concrete elements

Pre-stressed concrete

Bridges and cantilever structures

Areas of concrete


SNF provides the following properties :

As a superplasticizer :

Workability is greatly improved. Increased placeability in slender components with packed reinforcement.

Decreases the amount of vibration required.

Normal set without retardation.

Significantly reduces risk of segregation.


As a Water reducer :

Up to 20% reduction of water will produce 40% increasing in 28 days compressive strength.



0.6 % - 1.5 % by weight of cement.

SNF(PNS) is advisable to carry out trial mixes to establish the exact dosage rate required.

SNF is compatible with types of Portland cement,but recommended to have a trial before use it and determine a dosage.


Method of use

Normally it is dissolved into 40% solution.

It can also be added directly to the freshly mixed concrete.


Technical Data


Ingredient:sodium naphthalene sulfonate formaldehyde

Sodium sulfate:5%,20% two types

Appearance:Brown powder

Specific Gravity :0.6-0.75g/cm3

Shelf Life: Minimum 1 year if stored in original unopened container

Storage: Dry, cool, shaded place

Packaging 25 kg/bag,or Jambo bag,650kg/bag


Handling Precautions:

Avoid contact with skin and eyes

Wear protective gloves and eye protection during work

If skin contact occurs, wash skin thoroughly.

If in eyes, hold eyes open,flood with warm water and seek medical attention without delay.

Anchor 1

Thanks! Message sent.

Product List

bottom of page