Sodium Naphthalene Formaldehyde(SNF)

Sodium Naphthalene Sulfonate Formaldehyde Condensate(SNF) is Water Reducing Superplasticize in brown or dark brown powder,usually used as superplasticizer admixture for the construction industry,also used primarily as dispersants in a wide variety like filler, leather tanning agent, building cement concrete water reducing agent,oil well cement water reducing agent.

Cas No:36290-04-7


CB No.:CB8129327


Model itemSNF-5%SNF-10%SNF-20%
net starch fluidity ( ㎜ )≥ 230≥ 220≥ 210
content of c l — (%)< 0.3< 0.4< 0.5
PH value7 ~ 97 ~ 97 ~ 9
surface tension(N/m)(7 1 ± 1) × 10 -3(7 1 ± 1) × 10 -3(7 1 ± 1) × 10 -3
solids content(%)≥ 91≥ 91≥ 91
Na 2 SO 4 content(%)<5<5<19

Technical Feature

  1. Water reducing agent (SNF)can reduce the water consumption without affecting the normal construction of cement concrete, In the hardening process of cement concrete,there is less water to be lost,so there are fewer internal air holes in the concrete, which increases the strength of the concrete.
  2. The water-reducing agent(SNF) can improve the workability of cement concrete and reduce the energy consumption of construction mixing.
  3. The water-reducing agent(SNF) can reduce the amount of cement and water without reducing the performance and mechanical index of cement concrete, thus reducing the construction cost.
  4. Water-reducing agent(SNF) is no adverse effect on concrete shrinkage and no corrosion effect on steel reinforcement.

Test Date Sheet

Items TimeCriteriaActual Results
Water Reduction, %/≥ 1416
Water Penetration, %≤ 9085 
Air Content, %≤ 3.02.0 
Compression strength, %1h≥ 140160
3h≥ 130155
7h≥ 125 135
28h≥ 120125
     Shrinkage, %               28d≤ 135 89


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

2.Prepare solutions as required.

Package and Storage

1.Package:Powder products use woven bags. net weight: 25kg ± 0.2 kg or 650 kg ± 0.2 kg or 700 kg ± 0.2 kg .

2.It should be stored in a dedicated warehouse that is well-ventilated and dry.if be affected with damp,just smash or melt it into solution without any bad effection.


prevented from being torn by sharp-ended objects while packages are being transferred or delivered. when being contaminated by high humidity or moisture in case of leakage, it can be prepared in prescribed ways for further use without surrendering any effect.

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