Acid-Base Indicators- Under Construction
| Indicators | Acid Color | Range | Color |
| Methyl Violet | yellow | 0.0 - 1.6 | blue |
| Malachite Green | yellow | 0.2 - 1.8 | blue-green |
| Cresol red | red | 1.0 - 2.0 | yellow |
| Thymol blue | red | 1.2 - 2.8 | yellow |
| Benzopurpurin 4B | violet | 1.2 - 3.8 | red |
| Phloxine B | colorless | 2.1 - 4.1 | pink |
| 2,4-Dinitrophenol | colorless | 2.8 - 4.0 | yellow |
| Methyl yellow (in ethanol) | |||
| Bromophenol blue yellow | |||
| Congo red blue | |||
Methyl yellow (in ethanol) red 2.9 - 4.0 yellow
Bromophenol blue yellow 3.0 - 4.6 blue-violet
Congo red blue 3.1 - 4.9 red
Methyl orange red 3.2 - 4.4 yellow
Bromocresol green yellow 4.0 - 5.6 blue
alpha-Naphthyl red red 4.0 - 5.7 yellow
Methyl red red 4.8 - 6.0 yellow
Litmus (azolitmin) red 5.0 - 7.0 blue
Bromocresol purple yellow 5.2 - 6.8 violet
4-Nitrophenol colourless 5.4 - 6.6 yellow
Bromothymol blue yellow 6.0 - 7.6 blue
Phenol red yellow 6.4 - 8.0 red
Brilliant yellow yellow 6.6 - 7.9 orange
Cresol red yellow 7.0 - 8.0 red
Metacresol purple yellow 7.4 - 9.0 violet
2,6-Divanillyldenecyclohexanone yellow 7.8 - 9.4 red
Thymol blue yellow 8.0 - 9.6 blue
Phenolphthalein colourless 8.3 - 10.0 dark pink
Ethyl bis (2,4-dinitrophenyl acetate) colourless 8.4 - 9.6 blue
Thymolphthalein colourless 9.4 - 10.6 blue
Alizarin yellow R yellow 10.0 - 12.0 red
Malachite green hydrochloride green-blue 10.2 - 12.5 colourless
Methyl blue blue 10.6 - 13.4 pale violet
Sodium indigosulphonate blue 11.4 - 13.0 yellow
Orange G yellow 11.5 - 14.0 pink
2,4,6-Trinitrotoluene colourless 11.7 - 12.8 orange
1,3,5-Trinitrobenzene colourless 12.0 - 14.0 orange
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