| Sensitivity colorants such alizarin crimson, basic fuchsin, curcumin and pararosaniline base: they tend to fade. |
| Synthetic alizarin was formulated from tar in 1868 by Groebe and Libermann. |
| The presence of alizarin dye and red lakes in the Raes and radiocarbon samples indicates that the color has been manipulated. |
| The synthesis of alizarin stands as a landmark in molecule making for two reasons. |
| Red lakes made from synthetic alizarin became common alongside the lakes derived from natural madder dyes. |
| This mordant reacts with the dye alizarin to form a red lake, exactly as it does in a test tube in the typical analytical test for aluminum. |
