solid content 92% sodium naphthalene sulphonate formaldehyde superplasticizer

solid content 92% sodium naphthalene sulphonate formaldehyde superplasticizer INTORDUCTION: CAS Code: 36290-04-7 HS Code (CN): 38244010 SNF a high range water reducer, commonly referred to as a super plasticizer, also named Naphthalene Sulphonate Formaldehyde Condensate (short name: SNF, PNS, NSF, etc…) SNF is made from naphthalene, sulfuric acid, formaldehyde and liquid alkali, through sulfonation, hydrolyzation, condensation and neutralization reaction and then drying to