Common Acid - Base Indicators
| Indicator | pH Range in which Color Change Occurs |
Color Change as pH Increases |
|
Crystal violet Thymol blue Orange IV Methyl orange Bromcresol green Methyl red Chlorophenol red Bromthymol blue Phenol red Neutral red Thymol blue Phenolphthalein Thymolphthalein Alizarin yellow Indigo carmine |
0.0 - 1.6 1.2 - 2.8 1.4 - 2.8 3.2 - 4.4 3.8 - 5.4 4.8 - 6.2 5.2 - 6.8 6.0 - 7.6 6.6 - 8.0 6.8 - 8.0 8.0 - 9.6 8.2 - 10.0 9.4 - 10.6 10.1 - 12.0 11.4 - 13.0 |
yellow to blue red to yellow red to yellow red to yellow yellow to blue red to yellow yellow to red yellow to blue yellow to red red to amber yellow to blue colourless to pink colourless to blue yellow to blue blue to yellow |
[an error occurred while processing this directive]