KH-SNFC Sodium Naphthalene Sulfonate Formaldehyde Condensate | SNF Water Reducer
✓ Standard-grade sodium naphthalene sulfonate formaldehyde condensate
✓ 15–25% water reduction under suitable mix conditions
✓ ≤18% sodium sulfate and ≤0.3% chloride
✓ Improves concrete flow and cement dispersion
✓ Supports early and later-age strength development
✓ Cost-effective choice for precast, ready-mix and compound admixtures
Product Preview
KH-SNFC is a powder-form naphthalene based superplasticizer, also known as sodium naphthalene sulfonate formaldehyde condensate (SNF). It disperses cement particles so concrete can reach the required workability with less mixing water.
With a standard sodium sulfate limit of 18%, KH-SNFC is designed for producers seeking reliable performance and practical cost control in precast, cast-in-place, and ready-mix concrete.
Lower-sodium-sulfate grades are available for applications requiring reduced sulfate content, greater compatibility with sensitive cement systems, or compliance with more demanding technical specifications.
Actual water reduction, setting behavior, and strength response depend on cement chemistry, aggregate grading, temperature, dosage, and the complete admixture system. Laboratory trial mixes are recommended before production use.
Product Specifications
| Test Item | Specification |
|---|---|
| Appearance | Light brown powder |
| Solid content | ≥92% |
| Na₂SO₄ content | ≤18% |
| pH value | 7–9 |
| Chloride content | ≤0.3% |
Reliable High-Range Water Reduction
KH-SNFC typically provides 15–25% water reduction under suitable mix conditions. Lower water demand can support a reduced water-cement ratio while maintaining the flow required for placing and compaction.
Improved Cement Dispersion
The SNF polymer helps separate cement particles and releases water trapped in agglomerates. This improves initial fluidity and makes the mix easier to pump, place and consolidate.
Strength Development
When the mix water is reduced without sacrificing compaction, concrete can develop a denser hardened structure and improved early and later-age strength. Results should be confirmed with the project cement and curing regime.
Practical Cost Performance
KH-SNFC is a cost-effective option where strong initial water reduction is required but extended slump retention is not the primary design objective.
Useful Formulation Base
The powder can be used as a base material in compound admixtures formulated for pumping, early strength, set control or cold-weather construction. Compatibility must be checked before blending with other admixtures.
Precast Concrete
Improved initial flow and water reduction support mold filling, compaction and production efficiency in precast elements, including products made with natural or steam curing.
Ready-Mix and Cast-in-Place Concrete
KH-SNFC can improve placement efficiency in conventional ready-mix and cast-in-place concrete where the required transportation and placing window is compatible with SNF workability retention.
High-Strength Concrete
Reducing the water-cement ratio can support higher compressive strength when the aggregate grading, cement content and curing system are properly designed.
Waterproof and Impermeable Concrete
Better compaction and lower water demand can help reduce capillary voids in concrete designed for water-retaining or below-grade structures.
Compound Admixture Production
Admixture manufacturers can use KH-SNFC as an SNF base for project-specific formulations after checking compatibility, setting time and air content.
What is KH-SNFC?
KH-SNFC is a powder-form sodium naphthalene sulfonate formaldehyde condensate used as a high-range water reducer for concrete.
What is the sodium sulfate content?
The product specification limits Na₂SO₄ content to 18% or less. For a lower-sulfate grade, see KH-SNFA.
How much water can it reduce?
Typical water reduction is 15–25% under suitable mix conditions. The actual result depends on cement, aggregates, dosage and mix proportions.
Is it suitable for every cement?
SNF performance varies with cement chemistry and supplementary cementitious materials. Confirm compatibility and saturation dosage through trial mixes.
Does it provide long slump retention?
KH-SNFC mainly provides strong initial dispersion. For projects with long transport or placing times, test slump loss carefully or evaluate a slump-retaining PCE system.
Can it be mixed with PCE superplasticizers?
Do not combine different superplasticizer chemistries without compatibility testing. Uncontrolled blending can cause rapid slump loss, setting changes or unstable performance.
Is it suitable for reinforced concrete?
The chloride specification is ≤0.3%. Project standards and reinforcement-corrosion requirements must still be checked before use.
KH-SNFC is supplied as a dry powder in sealed, moisture-resistant packaging. Confirm the current bag size, pallet option and container loading plan with Huaxuan before ordering.
Store unopened bags in a cool, dry and ventilated warehouse. Keep the product away from moisture and direct sunlight. Reseal opened bags promptly and verify flowability before using material that has absorbed moisture or formed lumps.
Determine the optimum KH-SNFC dosage by laboratory trial rather than using a universal fixed value. Evaluate water reduction, initial slump, slump loss, setting time, air content and compressive strength with the actual cement and aggregates.
Add the measured powder through the plant’s approved admixture procedure and ensure complete mixing. When KH-SNFC is used in a compound admixture, check every component for compatibility before production.
For practical guidance, see How Much Superplasticizer Should Be Added to Concrete? and How to Add Superplasticizer to Concrete Correctly?.
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