sulphonated naphthalene formaldehyde for concrete admixtures,the content of Na2SO4 is only 2%Max.

SNF-A Superplasticizer is a dry powdered admixture. It is produced through such a process: 1) sulphonating refined naphthalene with sulfuric acid, 2) condensing with formaldehyde, 3) neutralization, and 4) filtering. It conforms to GB8076-1997 and is mainly used for various high-strength concrete, steel concrete, prestressed concrete, large formwork concrete, slipforming concrete etc.

Standard Quality Targets:

appearance:Brownish powder

solid content:91%Min.

content of Na2SO4 :2%Max.

PH Value:7--9