a blue dye-stuff prepared from chinoline with amyl iodide, used in calico-printing
cyanine blue: the name of a permanent blue pigment, a compound of cobalt and Prussian blue
CYANINE (including METAL-STABILIZED CYANINE)
This is the original dye polymer used in the Orange Book specification for recordable media. Discs using this type of dye can be identified by the emerald green or cobalt blue. (The dye itself is blue, but will appear different based on the material used for the reflective layer. A gold reflective layer will produce the green while a silver reflective layer will produce the blue).
CD-Rs show on their non-printed sides either bright colours (such as cyanine light blue, phtalocyanine green, yellow, or green/yellow combined, silver and gold) or azo dark blue. CD-RWs show a dark grey colour with a low reflectivity compared to CD-Rs.
