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      貝斯特鉬制品
      
				    
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      Sodium tungstate
      
		         
      
				 
				          
      
	
		
      
			Molecular formula
			Na2WO4.2H2O
		
      
		
      
			Properties
			white crystal
		
      
		
      
			Specification
			
			
      
				
					
      
						Chemical ingredients
						AR
						First grade
						Second grade
					
      
					
      
						Na2WO4.2H2O
						99
						98
						97
					
      
					
      
						Mo
						0.001
						0.02
						--
					
      
					
      
						AS
						0.001
						0.001
						0.001
					
      
					
      
						Cu
						0.0005
						0.001
						0.001
					
      
					
      
						Fe
						0.001
						0.001
						0.005
					
      
					
      
						Si
						0.004
						0.04
						0.04
					
      
					
      
						Water insoluble substance
						0.005
						0.05
						0.05
					
      
					
      
						PH
						8.5-9
						8.5-9
						8.5-9
					
      
				      
			
      
			      		
		
      
		
      
			Uses
			Intermediate of tungsten, used in mordant, catalystic pigment, reagent, weight additive, water treatment agent, fitre fight material, phosphato tungstated and boron tungstated
		
      
		
      
			Packing
			Net 25kg,metal pail and woven bag , plastic bag lined composite kraft paper bag or 50kg in plastic bag lined metal pail.
		
      
	      

      

				 
      
		  
		                                     
      
								                       
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