O2 Na1 Al1

Sodium aluminate (NaAlO₂) is an inorganic ceramic compound formed from sodium and aluminum oxides, commonly encountered as a hydrated phase in alumina-based systems and alkali-activated materials. This material finds primary use in construction chemistry, water treatment, and advanced cement formulations where its alkaline properties and reactivity with silica-based materials enable the formation of durable binding phases. Engineers select sodium aluminate-based compositions for applications requiring chemical activation of industrial byproducts (fly ash, slag) or for specialized refractory applications where sodium-containing phases are tolerable, though its hygroscopic nature and potential for carbonation require careful handling in service.