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        HD BRILLIANT BLUE FCF SUPRA    REF : IS - 6406 - 1994
     
Common name : Brilliant Blue FCF
Synonyms : F. D. & C. Blue No. 1
  : C. I. Food Blue 2
Colour Index Number (1971) : 42090
Indian Standards Specification : IS 6406 - 1977
Solubility in water at 300C : 18.7% (approx.)
Fastness properties    
     Light : Good
     Preservatives    
     Benzoic Acid  : Very Good
     Sulphur Dioxide : Very Good
     Heat (2200F., 1050C.) : Excellent
     Baking (4000F., 2050C.) : Very Good
     Fruit Acids (Citric & Tartaric) : Very Good
     Alkalies : Good
  
 Nos.: Characteristics:    Requirements:
   
 1.     Total dye content, corrected for sample dried at
         105° ± 1°C for 2 hours, percent by mass.		    Min. 85
   
 2.     Volatile matter at 135°C and chloride and sulphate
         expressed as sodium salt, percent by mass.		    Max. 15
   
 3.     Water insoluable matter, percent by mass.    Max. 0.2
   
 4.     Combined either extracts, percent by mass.    Max. 0.2
   
 5.     Subsidiary dyes, percent by mass.    Max.  3
   
 6.     Dye Intermediates, percent by mass.
         a) O-Sulpho-benzyldehyde
         b) N-N-ethyl-benzyl aniline-3-sulphonic acid
         c) Leuco base, percent by mass.


   Max. 1.5
   Max. 0.3
   Max. 5
   
          METALS:  
   
 7.    Lead, mg./kg.    Max. 10
   
 8.    Arsenic, mg./kg.    Max. 3
   
 9.    Chromium, mg./kg.    Max 50
   
 10.  Heavy Metals (as Pb), mg./kg.    Max 40
        
 
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