Naphthalene Sulfonate Formaldehyde

The sodium naphthalene sulfonate formaldehyde(SNF/PNS/FND), also called poly naphthalene sulfonate or naphthalene superplasticizer, belongs to a type of high range water reducer, and it can be used in cement and construction industry. SNF is made of naphthalene, sulfuric acid, formaldehyde and liquid base, and undergoes a series of reactions such as sulfonation, hydrolysis, condensation and neutralization, and then is dried into a powder.