Sodium Fluoride for toothpaste CAS 7681-49-4 Sodium Fluoride Molecular Formula: NaF Purity:99%min Mol. Wt:41.99 Cas No.:7681-49-4 UN: 1690 EINECS: 231-667-8 Synonyms: Sodium Fluoride ,Dentalfluoro ,Duraphat ,Villaumite Description:Colorless shiny crystal or white powder.Tetragonal system,Has a regular hexahedron or octahedral crytal.soluble in water,slightly soluble in ethanol.Aqueous solution is alkaline.Corrosive glass.Dissolved in hydrofluoric acid to form sodium hydrogen fluoride.Poisonous.Corrode shin,irritating mucosa.Invading the nervous system.Relative density:2.558. Melthing point :993â??,boiling point:1704â?? . Functional use:Wood preservatives,brewing industry fungicides,agriacltural.pesticides(must be dyed in blue).Medical preservative.Welding acid .Oxidation treatment agent for dringking water.Metallurgical cosolvent manufacture of other fluoride raw materials. Package: 25kg /drum Transportation:Inorganic toxiant.