Sodium Naphthalene Formaldehyde(Snf) - Product

Place of Origin : Hangzhou,China

Product Description

SNF is a Sodium Naphthalene Formaldehyde. This product is made by industrial Naphthalene, Beta-sulphonate, Formaldehyde and Alkali via sulphuration, hydrolyzation, condensation and neutralization reactions. It belongs to non-air-entraining superplasticizer. SNF is non-poisonous, odorless, non-flammable and non-corrosive to steel bars.
SNF meets the requirements of the PRC's Standardization of concrete admixture of GB8076-1997 and GB50119-2003.
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Physical Specification

Other Specification : Features, Properties & Characteristics Item Index Value Item Index Value Appearance Light Brown Powder PH Value 7～9 Solid Content ≥92％ Fluidity Of Cement Paste ≥250 Mm Sodium Sulfate Content ＜5% Fineness 0.315mm Sieve Residue<15％ Chlorides Content ＜0.3% Surface Tension （70±1）×10-3N/ M Performance Test, (Dosage, Cement×0.6％) Inspection Items Inspection Criteria Actual Results First Grade Qualified Water Reducing Rate (%, >) 20 18 21 Ratio Of Bleeding Rate（％,<） 90 95 79 Air Content（％）＜3.0 ＜4.0 2.0 Difference Of Set Time (min) Initial －90～＋120 +22 Final +16 Ratio Of Compressive Strength（％） 1d ＞140 ＞130 156 3d ＞130 ＞120 152 7d ＞125 ＞115 146 28d ＞120 ＞110 138 Ratio Of Shrinkage （％） 90d ＜135 82 Steel-bar Corrosion None None

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