The info you are seeking can be found in Kosar, Light Sensitive Systems, Wiley,1965. Although he devotes a whole chapter to Diazotype Processes, you will probably find his discussion of Aromatic Azido Compounds starting on page 330 the most useful. Allow me to quote:
"In combination with gelatin, glue, gum arabic, etc. aromatic azide compounds were suggested for about the same processes as previously described dichromates…"
Add to this: non-toxic, no dark reaction, and capable of long term storage after sensitization.
This is what was/is used as the UltraStable sensitizer.
Last edited by CMB; 06-20-2011 at 02:31 AM. Click to view previous post history.