Cadmium Red Light Alternative

Cadmium has been used as a weathering light and heat stabilizer primarily in pvc plastic formulations.

Cadmium red light alternative.

Alizarin crimson mixed with ultramarine blue will give a strong clear purple below left because both colours have a touch of red and blue in them and neither contains yellow to make it muddy. It is stable as a pure pigment. These are strong tinting high chroma colors with excellent lightfastness. In the united states use of cd bearing stabilizers has decreased since 1990.

The cadmium free pigment was developed after three years of research and development. There s a new cadmium free paint alternative for artists. However swap the alizarin to a cadmium red which has a yellow tinge to it and your purple won t be as clean and bright below right. Alternatives for cd stabilizers include barium zinc calcium zinc antimony organotin and organic compound stabilizers.

Cadmium red is cadmium sulfoselenide cd s se. Identifying suitable alternatives for the cadmium yellows has been a somewhat more difficult task. The variations are solid solutions of selenium sulfide in cadmium sulfide. Cadmium red contains between 15 to 30 and more selenium.

I like that although its hue is very similar to cadmium red light which makes it feel familiar to me its chroma is actually a bit higher and continues to hold up well with the addition of white paint at least as well as the cadmium red i ve been using.