Sodium Naphthalene Sulphonate B
Sodium Naphthalene Sulphonate(SNF)
Another name: sodium naphthalene formaldehyde, poly naphthalene sulfonate formaldehyde, snf powder,, FDN powder, naphthalene high range water reducer, SNF plasticizer.
Appearance: Yellow Brown powder
Solid Content 93% min
Moisture 8.0 % max
cont of Chloride (%) 0.4% max
PH value 7 - 9
Surface Tension(N/m) (71 ± 1) × 10 -3
net starch fluidity(mm) 250min
Water Reduction 20% min
Sodium Sulfate Content 10% max
SNF is one of High Range Water-Reducing Admixture.
SNF produces concrete with extremely workable characteristics referred to as high slump. SNF also allows concrete to be produced with very low water/cement ratios at low or normal slumps. SNF is ideal for use in prestress, precast, bridge deck or any other concrete where it is desired to keep the water/cement ratio to a minimum and still achieve the degree of workability necessary to provide easy placement and consolidation
SNF can be added directly or added in after dissolved. It can be added during mixing and after-mixing. The afterward approach can achieve better result. The suggested addition rate is 0.75%.
Direct use of powdery agent is allowed. Alternatively the addition of the agent is followed by water moisturization (water-cement ratio: 60%).
The agent can be combined with other externally applied agents if pilot development or laboratory experiment succeeds.
SNF Packing: Packed in plastic film bag wrapped with plastic woven sack with a net weight of 25kg each
Storage: Kept in dry and ventilating place, prevent from rain and moisture when storage; if agglomerated, please crush and make it into solution, and its effect will be the same.
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