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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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