NILE CHEMICALS

QUINALDINE  RED  INDICATOR

SPECIFICATION

C21H23N2  M.W.   430.32  
Absorption maximum  l 528 - 533 nm
Absorptivity ( A 1% 1 cm, 1 max glacial 1150 - 1250
acetic acid on dried substance )  
Water < 5%
Suitability as indicator  passes test
pH            colourlesss 1.4 - 3.2 red
   

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