... Polynaphthalene Sulfonic Acid Sodium Naphthalene Formaldehyde Min order:2mts Sodium Naphthalene Formaldehyde (SNF-Superplasticizer for Concrete) Basic information: 1) Chemical name:Sodium Salt of Polynaphthalene Sulfonic Acid ... , prestressed concrete, large formwork concrete, slip forming concrete etc, as a water reducing agent. Storage Keep in shaded,cool and dry ...