| Molecular formula:MgF2 Molecular weight :62.31 Properties: colorless square
                     crystal.  Uses: flux , additive, film, coating, luminescent   material, or used in glass and ceramics,  Quality standard: 
                     
                       | Index name  | Index  |  
                       | First grade  | Second grade  |  
                       | Assay % | ≥99 | ≥98 |  
                       | Total fluorine % | ≥61 | ≥61 |  
                       | Na % | ≤0.1 | ≤0.05 |  
                       | Silicate % | ≤0.9 | ≤0.02 |  
                       | Ca % | ≤0.1 | ≤0.05 |  
                       | Sulfate % | ≤0.2 | ≤0.05 |  
                       | Fe % | ≤0.02 | ≤0.005 |  
                       | Moisture % | ≤0.5 | ≤0.5 |  Packing:net wt. 25kg, plastic woven bag.
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