1. Sodium naphthalene sulfonate formaldehyde FDN ua taʻua foi naphthalene faavae superplasticizer, poly naphthalene sulfonate, sulfonated naphthalene formaldehyde. O lona foliga o le pauta lanu enaena. SNF superplasticizer e faia i le naphthalene, sulfuric acid, formaldehyde ma le faʻavae vai, ma e oʻo i se faasologa o gaioiga e pei o le sulfonation, hydrolysis, condensation ma le neutralization, ona faʻagogo lea i le paʻu.
2. Naphthalene sulfonate formaldehyde e masani ona taʻua o se superplasticizer mo sima, o lea e sili ona talafeagai mo le prepatation o le maualuga-malosi sima, ausa-faamalolo sima, vai sima, impermeable sima, susu susu, plasticized sima, uamea ma prestressed. sima fa'amalosi. E le gata i lea, o le sodium naphthalene sulfonate formaldehyde e mafai foi ona faʻaaogaina e avea o se faʻasalalau i le paʻu, ie ma le vali, ma isi. I le avea ai o se tagata faʻapolofesa faʻapolofesa o le naphthalene superplasticizer i Saina, Longou e tuʻuina atu i taimi uma le maualuga o le SNF paʻu ma tau falegaosimea mo tagata uma.