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This experiment can be extended by using other phenols to produce alternative dyes and attempting to dye various materials with the produced dye.
Materials:
| Ethyl 4-aminobenzoate (0.5 g) | 2 M hydrochloric acid (10 cm3) |
| sodium nitrite (0.5 g) | Naphthalen-2-ol (1 g) |
| 2M sodium hydroxide (10 cm3) | Ice |
| 100 cm3 beaker (3) | 400 cm3 beaker |
| Glass rod | Spatula |
| 10 cm3 measuring cylinder | - 10 to 110 ºC thermometer |