This is what the entry from the Zecchi site looks like to help in ordering: “ CADMIUM YELLOW LIGHT. Chemical composition: Cadmium Sulphide. (Series: 8) .” Here is our best guess at the equivalent in Italian. This is from the Italian portion of the site: “ GIALLO CADMIO CHIARO. Composizione chimica: Solfuro di cadmio. (Gruppo: 8).”