The name cadmium is derived from cadmia fornacum, a type of furnace used to smelt zinc. In experiments, chemists used hydrogen sulfide to precipitate the yellow colorant from solutions of cadmium salts. By 1880, they further discovered by gradually increasing the amount of selenium, they could produce deeper shades of cadmium orange and all shades of cadmium red. It offers painters a pure hue that is more transparent than Cadmium Orange and remains brighter in its tint when mixed with white. Another interesting orange is Gamblin Transparent Orange , our best selling orange, which can be used as a completely transparent glazing color.
Painters can also create subtle color shifts by applying various thicknesses of transparent orange.