Naphthalene Sulfonate Formaldehyde 21% of Concrete Admixitures

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Min Order Qty:
10000 kg
Supply Capability:
50000 kg/month

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Product Description:

Naphthalene Sulfonate Formaldehyde (Na2SO4 ≤21%)

NSF, 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.
NSF is suitable to make autotrophic concrete, steam curing concrete, steel concrete and prestress concrete, all of which are made mainly of portland cement.

NSF 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.
NSF 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, %

21.0 max

Chloride Content, %


Surface Tension

68-72 Mn/m

Cement Paste Flow

230mm min

Water Reducing Rate

17% min

Steel-bar Corrosion


Features and Benefits
High water reducing rate: over 20%.

Early and post strengthening ability.

Great compatibility with various types of cement.
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.


1. Q:Are you a manufactory or trading company?

A:We are a professional manufactory with 12 years’ experience and 2 years of export experience, covers an area of 30 acres.

2. Q: May I know your MOQ request?

A:MOQ is 1 TON. 

3. Q: Could you offer free sample?

A:We can provide free samples to you for quality testing.

4. Q: Does your product is dangerous merchandise?

A: Not dangerous merchandise, It belongs to Not legal Inspection merchandise.

5. Q: What about your packing?

A: Liquid in IBC tank or Flexitank;Powder in woven bags. 

6. Q: How about your productive capacity?

A: 900000 tons/Year.

7. Q: What is your export port?

A: China main port.

8. Q: What is your delivery time?

 A: Within 7 days after received advanced payment.

9. Q: Can you print logo or label on packing as customer request?

A: Yes, we can customize according to your requirements. 

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