| Molecular formula:Na2(PO3)F Molecular weight :143.95 Uses: used as additive of toothpaste, cleaning agent   of fluoride on the surface of metal, flux and bactericide.  Quality standard: 
                     Packing:net wt. 25KG, plastic woven bag .
                       | Index name  | Index  |  
                       | Sodium monofluorophosphate Assay % | ≥98.0 |  
                       | Compound fluorine (F)% | ≥13.0 |  
                       | Free fluorine (F)% | ≤0.5 |  
                       | As % | ≤0.0003 |  
                       | Heavy metals(Pb)% | ≤0.002 |  
                       | Ph(20g/L solution )  | 6.5-8.0 |  
                       | Loss on dry % | ≤0.2 |  |