It is a high range water reducer, high concentration naphthalene-based superplasticizer, also named Naphthalene Sulfonate Formaldehyde Condensate SNF, PNS and FDN etc. Na2SO4 has 3 grades:5% 10% 18% for exporting markets.It contains no chloride, non-corrosive to steel bars, non-poisonous, odorless, and non-flammable.
