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β-naphthyl sulfonate formaldehyde condensate.HS:3824401000naphthalene sulphonate formaldehyde-based,high range water-reducing admixture.naphthalene sulphonate-type.Its main component is naphthalene sulfonate formaldehyde condensation substance. It is non-air entraining high-efficient water reducing agent with excellent comprehensive properties for concrete projects. A high range water-reducing admixture that produces a low water/cement ratio giving high performance concrete. Promotes high slump, extremely flowable concrete that achieves high strengths while providing superior workability and pumpability.Main indexes1.Physical item:ITEMN-AIAppearanceLight brown powderSolid Content≥92Sodium sulphate5%Chloride0.36%PH Value8.2Fluidity250 mm MINSurface Tension70±1×10-3N/M 2.Enhance the effect of the concrete as following:* 15-20% of cement can be reserved under the condition of the same caving in and same strength** Non-poisonous, odorless, non-flammable and non-corrosive to steel bars.*** Suit for blend for the C30-C60(32MPA-80MPA )concrete**** Degree of collapses(Degree of fluidity): 180 mm- 280 mm***** Reducing ratio 18%-30%****** As the condition of the material and the climate where amount of cement and collapsibility are fixed aforehand, mixing water can be decreased by 18-28% when it is mixed with reinforced concrete at 0.5-1.2%. Statistically, compression strength on the lst day, the 3 rd day and the 28 th day after single application is increased by 60-100%, and 30-60% respectively when it is added at standard blend dosage. The compression strength, tensile strength, buckling strength and modulus of elasticity will be improved.3. Scope of application* Apply to Natural curing concrete and aerated concrete** Apply to compound lean concrete and high strength concrete*** Apply to all types of Portland cement4. Application method* The quantity scope to be mixed:0.4-1.2% of the weight of cement, better performance will be given if the scope could be controlled by 0.5-0.8%.** The N-series High Range Water Reducers could be:1. directly mixed in cement2. compounded to solution before mixing with water added to cement.