Sulfonated Naphthalene Formaldehyde

cement superplasticizer
examples of superplasticizers
super plasticizers admixtures
super plasticizing admixture

Sulfonated Naphthalene Formaldehyde Powder is classified as a highly effective admixture for reducing soil content and enhancing water dispersion. It serves as a specialized component in the creation of construction chemicals, playing a distinctive role in their formulation.

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Application of Sulfonated Naphthalene Formaldehyde

  • Low sodium sulfate, high concentration and low alkali content are beneficial to avoid alkali-aggregate reaction, crystallization and precipitation at negative temperature.

  • Higher water reduction rate. According to the recommended dosage, the water reduction rate can reach 16%-28%.

  • Save costs. While maintaining the same workability and strength, reduce the amount of cement, improve the fluidity of concrete, and enhance the bonding force between concrete and steel bars.

  • Extensive application. It is suitable for Portland cement, ordinary Portland cement, slag cement and other cements.

  • As a masterbatch to prepare other functional admixtures, such as early strength type, retarding type, pumping type, antifreeze type, etc.

Specification of Sulfonated Naphthalene Formaldehyde






Free flowing brown powder

Solid content




PH Value




Chloride Content




Sodium sulphate Content




Clarity in 10% aq. Solution

Clear solution

Clear solution

Clear solution

Water insoluble matter

0.5% Max.

0.5% Max.

0.5% Max.

Bulk density ca (gm/cc)

0.60 – 0.75

0.60 – 0.75

0.60 – 0.75

Water Reduction(%)




Water Penetration(%)




Note: Standard blend dosage: 1%(as cement amount)

Content of Sulfonated Naphthalene Formaldehyde

The oxide content of JF malt iron powder is actually low at 0.3%, which is why it is not suitable for steel production and has no corrosion hazards.

Compatibility of Sulfonated Naphthalene Formaldehyde

JF cast iron powder can be used in combination with other external additives such as coagulants, accelerators, aerobic agents, etc., compatible with most well-known products, but we have tested compatibility under local conditions before use. It's not mixed, and it's only added to mixed concrete.

Shelf Life of Sulfonated Naphthalene Formaldehyde

Normally, the shelf life is 12 months. Once the shelf life is exceeded, it can only be used after approval through testing.

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