IUPAC name: 2-[7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl]-1,3-dimethyl-1H-benzimidazolium chloride
Type: Coumarin dye
To make a working solution dissolve 1.5 gram Basic Red 14 in 1 litre of ethanol  (or denatured ethanol.)
Our water based formula  is:
1.5 gram BR14
 HOSDB, Fingerprint and Footwear Forensics Newslettter, November 2007, Publication No. 59/07.
 Based on the Rhodamine 6G formulation described in the AFP Workshop Manual
Sudan Black is a non-fluorescing dye in an ethanol/water mixture that can also be used for staining of cyanoacrylate (for example, when the surface with the prints is fluorescent, or has become fluorescent after earlier application of a fluorescent dye stain).
The cyanoacrylate is colored blue to black, depending on the degree of absorption.