Hi Homburgers,
Funy, I was just looking at that Thread yestesterday. It may be("hope springs eternal")that, just as SDE3008 green sensitizer acts as a red and green sensitizer, the Pinacyanol chloride may behave in a similar maner. My latest batches contain only SDA3008 green sensityzer and actualy are evenly sensitive to green and red. If not, there is always erythrosine.
Unfortuneately, Sands dose not release the dye structure, or even an absorbtion spectrum.
Bill