HS: 3824401000 Sodium Naphthalene Formaldehyde (SNF-Superplasticizer for Concrete) Basic information: 1) Chemical name:Sodium Salt of Polynaphthalene Sulfonic Acid 2) CAS number:36290-04-7 3) Standard:GB 8076-2008 4) Molecular weight:480.44 Specification: Appearance:Light brown powder Solid content:92.0% max Sodium sulphate:5%/10%/18% max Chloride content:0.3% max pH value:7-8 Fineness:5.0% max Surface tension:68-72mn/m Density:1.003G/cm3 Cement flowing rate:240mm min Concrete reducing water rate:20% min Steel-bar corrosion:None Application: Mainly used for formulating concrete superplasticizer, high high-strength concrete, steel concrete, prestressed concrete, large formwork concrete, slip forming concrete etc, as a water reducing agent.