Chromogens
Definition:
An
compound, upon being oxidized, gives up electrons and becomes a
colored product.
3,3’-diaminobenzidine
tetrahydrochloride (DAB)
Examples:
Produces a dark brown
granular product
3-amino-9-ethylcarbazole
(AEC)
Produces a brick red
colored product
Insoluble in alcohol
Soluble in alcohol
Color will fade with
time
Color is stable