Naphthalene Sulfonate Formaldehyde Sodium salts
Description
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 strength.so it is used as raw material for the production of concrete admixtures for ready mixed concrete or mortars.
Use
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
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Advantages
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.
Dosage
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
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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.