Kopparftalocyaninblått

Kopparftalocyaninblått, also known as copper phthalocyanine blue, is a synthetic blue pigment. It is a complex organic compound with the chemical formula C32H16CuN8. This pigment is renowned for its intense, vibrant blue color and exceptional durability. It is formed by the reaction of phthalonitrile with a copper salt, typically copper(I) cyanide, at high temperatures.

The pigment is highly stable, resistant to light, heat, and chemicals. This makes it a valuable colorant in various applications. It is widely used in paints, inks, plastics, and textiles. Its excellent lightfastness ensures that colors do not fade significantly over time when exposed to sunlight. The pigment's chemical inertness means it does not react with other substances, making it suitable for use in many formulations.

Kopparftalocyaninblått exists in several crystalline forms, most notably alpha and beta forms, which exhibit slightly different shades of blue. The beta form is generally considered to be greener in hue and more opaque. Its synthesis is a well-established industrial process, leading to its widespread availability and relatively low cost for such a high-performance pigment. It is one of the most important organic blue pigments used globally.