How is SNF different from a polycarboxylate superplasticizer?

SNF is a naphthalene-based condensate dispersant, while PCE admixtures use a different polymer architecture. Their slump retention, cement sensitivity and interaction with other admixtures can differ, so they should be compared in the actual concrete mix.

Which SNF specifications matter for a concrete-admixture buyer?

State powder or liquid form, active-solids basis, pH, density, sulphate and chloride limits, and the required fluidity test conditions. Cement compatibility and set-time response need confirmation through a mix trial.

Sodium Naphthalene Sulfonate Formaldehyde Condensate (SNF) CAS 9084-06-4

Sodium naphthalene sulfonate formaldehyde condensate (SNF), also known as naphthalene superplasticizer, CAS 9084-06-4, is a naphthalene-based concrete and mortar water-reducing dispersant. Powder and liquid grades are specified by solids, pH and cement compatibility, with COA, TDS and SDS for the agreed admixture grade.

CAS: 9084-06-4
Synonyms: Sodium naphthalene sulfonate formaldehyde condensate; SNF; NSF; Naphthalene superplasticizer
Einecs: Not specified (condensation polymer)
Molecular Formula: Not specified (sulfonated naphthalene condensate)
Grade: Concrete-admixture grade; powder or liquid form selected by solids and cement compatibility
Package: 25 kg bags for powder grades or drums/IBCs for liquid grades; export pack is grade dependent
Appearance: Brown powder or liquid grade
Product family: Sulfonated naphthalene formaldehyde condensate
Primary use: Concrete and mortar water-reducing dispersant
Key controls: Solids, pH, density, sulphate/chloride limits and fluidity test method
Compatibility: Validate with the intended cementitious mix and other admixtures

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Product Description

Sodium naphthalene sulfonate formaldehyde condensate (SNF, CAS 9084-06-4) is a naphthalene-based dispersant used in concrete and mortar admixtures. Its purpose is to support fluidity and water reduction in a finished mix, but the actual response depends on cement composition, supplementary cementitious materials, aggregate moisture, admixture interactions and the dosage programme.

1 Applications

2 Specification points

3 Mix-design validation

Applications

Ready-mix and precast concrete admixtures requiring a naphthalene-based high-range water reducer.
Mortar and grout formulations where dispersion and workable consistency are required.
Concrete systems where established naphthalene superplasticizer chemistry is preferred over a polymeric PCE route.
Selected pigment, dye or mineral-dispersion formulations when the grade is technically compatible.

Specification points

Confirm powder or liquid form, active solids, pH, density, sulphate/chloride limits and the test method used to evaluate fluidity. Polycarboxylate ether monomers belong to a different admixture chemistry; SNF and PCE should be compared by the real mix design rather than by a generic water-reduction claim.

Mix-design validation

Set time, slump retention, air content and early strength should be validated on the intended cementitious system. The COA confirms the supplied material; it does not replace an admixture trial.

FAQ - Technical & Supply Chain

Q:
How is SNF different from a polycarboxylate superplasticizer?

A: SNF is a naphthalene-based condensate dispersant, while PCE admixtures use a different polymer architecture. Their slump retention, cement sensitivity and interaction with other admixtures can differ, so they should be compared in the actual concrete mix.
Q:
Which SNF specifications matter for a concrete-admixture buyer?

A: State powder or liquid form, active-solids basis, pH, density, sulphate and chloride limits, and the required fluidity test conditions. Cement compatibility and set-time response need confirmation through a mix trial.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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