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                                Fluorescent Whitening Agent   WS(FBA52) 
                               
                             
                           
                         
                       
                          
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                      Properties: 
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                      Fluorescent Whitening Agent WS is a compound of coumarin type.The product has an   appearance of white powder and similar to the foreign brands such as Uvitex   SWN,Leucophor WS,Blankophor FBO.It is solubility:soluble in organic solvents   such as ethanol,methanol and glycol,and soluble in acidic water bath.  | 
                     
                    
                      Applications:  
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                      This whitening agent is mainly used for whitening wool,natural   silk,Jinlun,acetate fiber and triacetate fiber.It can be also used for whitening   cotton,acrylic fiber,and cellulose fiber of resin.  | 
                     
                    
                      Directions for use and dosage:  | 
                      Adjust the PH volume to 3-5 with vinegqr acid,30-50°C,bath   ratio:1:20-40,dissolve WS with a dosage of 0.05-0.35%,then put into the wet wool   product,make the temperature up to 60-70°C, with 30 min,Lower temperature,wash   and dry.   | 
                     
                    
                    
                      Specifications:  | 
                      
                        
                          | Item  | 
                          Indices  | 
                         
                        
                          | Appearance  | 
                          white powder  | 
                         
                        
                          | Melting point  | 
                          65-70°C  | 
                         
                        
                          | Purity  | 
                          ≥98%  | 
                         
                        
                          | Moisture content  | 
                          ≤5%  | 
                         
                       
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                      Packaging and storing:  | 
                      Packaged in plastic barrels,25kg or 50kg each.Stored by sealing it airtight in   cool place.  | 
                     
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