| Indicator |
Transition Interval |
Color Change |
Indicator Solution (preparation) |
| Malachite green oxalate (C.I. No. 42000) |
0.0 Yellow |
2.0 Green-blue |
0.1g in 100ml water |
| Brilliant-green (C.I. No. 42040) |
0.0 Yellow |
2.6 Green |
0.1g in 100ml water |
| Eosin yellowish (C.I. No. 45380) |
0.0 Yellow |
3.0 Green fluorescence |
0.1g in 100ml water |
| Erythrosine B (C.I. No. 45430) |
0.0 Orange |
3.6 Red |
0.1 in 100ml water |
| Methyl green (C.I. No. 42590) |
0.1 Yellow |
2.3 Blue |
0.1g in 100ml water |
| Methyl violet (C.I. No. 42535) |
0.1 Yellow |
2.7 Violet |
0.1g in 100ml ethanol (20%) |
| Picric acid (C.I. No. 10305) |
0.2 Colorless |
1.0 Yellow |
0.1g in 100ml ethanol (70%) |
| Cresol red |
0.2 Red |
1.8 Yellow |
0.1g in 100ml ethanol (20%) |
| Crystal violet (C.I. No. 42555) |
0.8 Yellow |
2.6 Blue-violet |
0.1g in 100ml ethanol (70%) |
| m-Cresol purple |
1.2 Red |
2.8 Yellow |
0.004g in 100ml ethanol (20%) |
| Thymol blue |
1.2 Red |
2.8 Yellow |
0.04g in 100ml ethanol (20%) |
| p-Xylenol blue |
1.2 Red |
2.8 Yellow |
0.1g in 100ml ethanol (50%) |
| 2,2',2",4,4'- Pentamethoxytriphenylcarbinol |
1.2 Red |
3.2 Colourless |
0.1g in 100ml ethanol (96%) |
| Eosin bluish (C.I. No. 45400) |
1.4 Colourless |
2.4 Fluorescent pink |
0.1g in 100ml water |
| Quinaldine red |
1.4 Colourless |
3.2 Pink |
0.1g in 100ml ethanol (60%) |
| 2,4-Dinitrophenol |
2.8 Colourless |
4.7 Yellow |
0.1g in 100ml ethanol (70%) |
| Methyl yellow (C.I. No. 11020) |
2.9 Red |
4.0 Yellow-orange |
0.1-0.5g in 100ml ethanol (90%) |
| Bromochlorophenol |
3.0 Yellow |
4.6 Blue-violet |
0.1g in 100ml ethanol (20%) to 100ml w/water |
| Bromophenol blue |
3.0 Yellow |
4.6 Blue-violet |
0.1g in 100ml ethanol (20%) |
| Congo red (C.I. No. 22120) |
3.0 Blue |
5.2 Yellow-orange |
0.2g in 100ml water |
| Methyl orange (C.I. No. 13025) |
3.1 Red |
4.4 Yellow-orange |
0.04g in 100ml ethanol (20%) |
| Methyl orange solution |
|
|
|
| Mixed indicator 4.5 acc. to Mortimer |
4.3 Red |
5.2 Blue |
250ml |
| Bromocresol green |
3.8 Yellow |
5.4 Blue |
0.1g in 100ml ethanol (20%) |
| 2.5-Dinitrophenol |
4.0 Colourless |
5.8 Yellow |
0.05-0.1g in 100ml ethanol (70%) |
| Methyl red (C.I. No. 13020) |
4.4 Red |
6.2 Yellow-orange |
0.1g in 100ml ethanol (96%) |
| Methyl red sodium salt (C.I. No. 13020) |
4.4 Red |
6.2 Yellow-orange |
0.1g in 100ml ethanol (96%) |
| Mixed indicator 5 |
4.4 Red-violet |
5.8 Green |
250ml |
| Chlorophenol red |
4.8 Yellow |
6.4 Purple |
0.1g in 100ml ethanol (20%) |
| Litmus (C.I. No. 1242) |
5.0 Red |
8.0 Blue |
4g in 100ml water |
| Bromocresol purple |
5.2 Yellow |
6.8 Purple |
0.1g in 100ml ethanol (20%) |
| Bromophenol red |
5.2 Orange-yellow |
6.8 Purple |
0.1g in 100ml ethanol |
| 4-Nitrophenol |
5.4 Colourless |
7.5 Yellow |
0.2g in 100ml ethanol (96%) |
| Bromoxylenol blue |
5.7 Yellow |
7.5 Blue |
0.1g in 100ml ethanol (96%) |
| Bromothymol blue |
6.0 Yellow |
7.6 Blue |
0.1g in 100ml ethanol (20%) |
| Phenol red |
6.4 Yellow |
8.2 Red-violet |
0.1g in 100ml ethanol (20%) |
| 3-Nitrophenol |
6.6 Colourless |
8.6 Yellow-orange |
0.3g in 100ml ethanol (96%) |
| Neutral red (C.I. No. 50040) |
6.8 Blue-red |
8.0 Orange-yellow |
0.3g in 100ml ethanol (70%) |
| Cresol red |
7.0 Orange |
8.8 Purple |
0.1g in 100ml ethanol |
| 1-Naphtolphthalein |
7.1 Brownish |
8.3 Blue-green |
0.1g in 100ml ethanol (50%) |
| m-Cresol purple |
7.4 Yellow |
9.0 Purple |
0.04g in 100ml ethanol (20%) |
| Thymol blue |
8.0 Yellow |
9.6 Blue |
0.04g in 100ml ethanol (20%) |
| p-Xylenol blue |
8.0 Yellow |
9.6 Blue |
0.1g in 100ml ethanol (50%) |
| Phenolphthalein |
8.2 Colourless |
9.8 Red-violet |
0.1g in 100ml ethanol (96%) |
| Phenolphthalein solution (1% in ethanol) |
8.0 Colourless |
10.0 Red-violet |
1.0g in 100ml ethanol (96%) |
| Phenolphthalein solution (0.375% in methanol) |
8.0 Colourless |
10.0 Red-violet |
0.375g in 100ml methanol (99%) |
| Thymolphthalein |
9.3 Colourless |
10.5 Blue |
0.1g in 100ml ethanol (50%) |
| Alkali blue (C.I. No. 42750) |
9.4 Violet |
14.0 Pink |
0.1g in 100ml ethanol (96%) |
| Alizarin yellow GG (C.I. No. 14025) |
10.0 Light-yellow |
12.1 Brownish-yellow |
0.1g in 100ml water |
| Titan yellow (C.I. No. 19540) |
12.0 Yellow |
13.0 Red |
0.1g in 100ml ethanol (20%) |
| Indigo carmine (C.I. No. 73015) |
11.5 Blue |
13.0 Yellow |
0.25g in 100ml ethanol (59%) |
| Epsilon blue |
11.6 Orange |
13.0 Violet |
0.1g in 100ml water |
