CadmiumSulfidPigmente

Cadmium sulfide pigments are a group of brilliant yellow, orange, and red inorganic pigments. They are manufactured by precipitating cadmium sulfide (CdS), often with the addition of other compounds like zinc sulfide (ZnS) for yellow shades, or selenium (Se) for orange and red hues. The specific shade depends on the exact composition, particle size, and crystal structure. These pigments are known for their excellent opacity, lightfastness, and heat stability.

Historically, cadmium sulfide pigments were widely used in paints, plastics, ceramics, and glass. Their vibrant colors and durability made them a popular choice for applications requiring long-lasting and intense coloration. However, concerns regarding the toxicity of cadmium have led to a significant decline in their use, particularly in consumer products and applications where human exposure is likely. Cadmium is a heavy metal that can be harmful to human health and the environment.

Due to these health and environmental concerns, the use of cadmium pigments is now heavily regulated in many parts of the world. Regulations often restrict their application to industrial uses where exposure is controlled or in durable goods where leaching is minimal. Alternatives that offer similar color properties with lower toxicity, such as organic pigments or inorganic pigments based on bismuth vanadate, have largely replaced cadmium pigments in many applications. Despite the decline in usage, cadmium pigments remain significant in certain specialized industrial applications where their unique properties are still valued and can be managed safely.