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        Ammonium silicofluoride
        
           
        
	
		
        
			Molecular formula
			(NH4)2SiF6
		
        
		
        
			Molecular weight
			178.15
		
        
		
        
			CAS    NO
			16919-19-0
		
        
		
        
			Characters
			Colorless crystal powder
		
        
		
        
			Use
			Used for carving, pesticide and hot welding flux.
		
        
		
        
			Specification
			Analytically pure , chemically pure
		
        
		
        
			Executive standard
			Enterprise standard
		
        
		
        
			Technical index
			
			
        
				
					
        
						
						
        Name
        
						        		
						
						
        Analytically pure (%)
        
						        		
						
						
        Chemically pure(%)
        
						        		
					
        
					
        
						
						
        Water solubility
        
						        		
						
						
        qualified
        
						        		
						
						
        qualified
        
						        		
					
        
					
        
						
						
        Chloride(Cl)
        
						        		
						
						
        ≤0.005
        
						        		
						
						
        ≤0.02
        
						        		
					
        
					
        
						
						
        Sulfate(SO4)
        
						        		
						
						
        ≤0.01
        
						        		
						
						
        ≤0.05
        
						        		
					
        
					
        
						
						
        Carbonate(CO3)
        
						        		
						
						
        ≤0.01
        
						        		
						
						
        —
        
						        		
					
        
					
        
						
						
        Free acid
        
						        		
						
						
        ≤0.5
        
						        		
						
						
        —
        
						        		
					
        
					
        
						
						
        Heavy metal(Pb)
        
						        		
						
						
        ≤0.005
        
						        		
						
						
        ≤0.01
        
						        		
					
        
					
        
						
						
        Ferrum(Fe)
        
						        		
						
						
        ≤0.005
        
						        		
						
						
        ≤0.01
        
						        		
					
        
				        
			
        
			        		
		
        
		
        
			Packing
			500kg for bottle packing, 40kg for pail packing, 25kg for paper plastic packing
		
        
	        

        

        
           
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