 NILE 
CHEMICALS
 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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