四川丰满少妇一级毛片63

                      

                          

                              










                              
  
                              
    





                               
                              

                              
  
                              
           4,4’-Diaminostilbene-2,2’-disulf..
  
                              
           p-nitrotoluene-o-sulfonic acid ..
  
                              
           4,4-Dinitrostilbene-2,2-disulfon..
  
                              
           Aniline-2,5-disulfonic acid mono..
  
                              
           Para Amino Azo Benzene 4 Sulfoni..
  
                              
           4-aminobenzene-1,3-disulphonic a..
  
                              

                              
  
                              
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                              4,4’-Diaminostilbene-2,2’-disulfonic acid
                              
                    
                              		
                
                              
                
                              
                   
                              Chemical name:4,4’-Diaminostilbene-2,2’-disulfonic acid
                              
Structural formula: 
                              
   
                              
Chemical formula: C14H14N2O6S2     
                              
Molecular weight: 370.4
                              
CAS NO.:81-11-8 
                              
Property: 
                              
1)Light yellow cream or powder, soluble in ethanol and ether; insoluble in water,
                              
easily soluble in alkaline solution.
                              
2)Can be easily oxidized into red; has the property of aromatic acid or aromatic amine
                              
Quality index:
                              


                              
	
		
                              
			Item
			Index
		
                              
		
                              
			(1)Appearance dry/wet
			light yellow powder/light yellow cream
		
                              
		
                              
			(2)Dry product total amino value(gross dry sample)　　
			≥ 95.0%
		
                              
		
                              
			(3)Degree of pigmentation(EOD)　　　　　　　　　　　　
			≤ 0.12
		
                              
		
                              
			(4)Content of alkali insolubles (gross cream )　　　
			≤ 0.08%
		
                              
		
                              
			(5)Benzyl compound(gross sample)　　　　　　
			≤ 0.25%
		
                              
		
                              
			(6)Ash content　　　　　　　　　　　　　　　
			≤ 2.2%
		
                              
	                              

                              


                              Main use: In the manufacture of fluorescent brighteming agent、Chrysophenine G
                              
and Direct Yellow R, also as pesticides 
                              
Packing: dry product: in 25kg woven bags or upon clients' request; wet product:
                              
in 40kg woven bag or upon clients' request.