Commonly used Hematoxylins: Their Oxidizers and Mordants
Alum Hematoxylins:
| Gill's | Sodium iodate | Aluminum sulfate |
| Delafield's | Naturally | Ammonium alum |
| Mayer's | Sodium iodate | Potassium or ammonium alum |
| Harris's | Sodium or potassium iodate (mercuric chloride no longer used due to its' toxicity) | Potassium alum |
| Ehrlich's | Naturally | Potassium alum |
Iron Hematoxylins:
Iron salts are used as both the oxidizing agent and the mordant in the following examples:
| Heidenhain's | Ferric ammonium sulfate | Ferric ammonium sulfate |
| Weigert's | Ferric chloride | Ferric chloride |